DEAN WITTER HIGH INCOME SECURITIES TRUST
497, 1995-06-02
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<PAGE>
                        DEAN WITTER
                        HIGH INCOME SECURITIES
                        PROSPECTUS--JUNE 1, 1995

- -------------------------------------------------------------------------------

DEAN WITTER HIGH INCOME SECURITIES (THE "FUND") IS AN OPEN-END DIVERSIFIED
MANAGEMENT INVESTMENT COMPANY WHOSE PRIMARY INVESTMENT OBJECTIVE IS TO EARN A
HIGH LEVEL OF CURRENT INCOME. AS A SECONDARY OBJECTIVE, THE FUND WILL SEEK
CAPITAL APPRECIATION, BUT ONLY WHEN CONSISTENT WITH ITS PRIMARY OBJECTIVE. THE
FUND SEEKS HIGH CURRENT INCOME BY INVESTING PRINCIPALLY IN FIXED-INCOME
SECURITIES WHICH ARE RATED IN THE LOWER CATEGORIES BY ESTABLISHED RATING
SERVICES (BA OR LOWER BY MOODY'S INVESTORS SERVICE, INC. OR BB OR LOWER BY
STANDARD & POOR'S CORPORATION) OR ARE NON-RATED SECURITIES OF COMPARABLE
QUALITY.

The Fund invests predominantly in lower-rated fixed-income securities commonly
known as junk bonds and investors should carefully consider the risks they
present, including the risk of default. Bonds of this type are subject to
greater risks than higher-rated securities and are considered to be speculative
with regard to the payment of interest and return of principal. Investors should
also be cognizant of the fact that such securities are not generally meant for
short-term investing and should assess the risks associated with an investment
in the Fund. (See "Risk Considerations.")

Shares of the Fund are continuously offered at net asset value. However,
redemptions and/or repurchases are subject in most cases to a contingent
deferred sales charge, scaled down from 4% to 1% of the amount redeemed, if made
within five years of purchase, which charge will be paid to the Fund's
Distributor, Dean Witter Distributors Inc. (See "Redemptions and
Repurchases--Contingent Deferred Sales Charge.") In addition, the Fund pays the
Distributor a distribution fee pursuant to a Rule 12b-1 Plan of Distribution at
the annual rate of 0.80% of the lesser of the (i) average daily aggregate net
sales or (ii) average daily net assets of the Fund. (See "Purchase of Fund
Shares--Plan of Distribution.")

<TABLE>
<CAPTION>
TABLE OF CONTENTS

<S>                                                 <C>
Prospectus Summary................................       2
Summary of Fund Expenses..........................       3
Financial Highlights..............................       4
The Fund and its Management.......................       4
Investment Objectives and Policies................       5
  Risk Considerations.............................       6
Investment Restrictions...........................      10
Purchase of Fund Shares...........................      10
Shareholder Services..............................      12
Redemptions and Repurchases.......................      14
Dividends, Distributions and Taxes................      15
Performance Information...........................      16
Additional Information............................      16
Appendix..........................................      17
</TABLE>

This Prospectus sets forth concisely the information you should know before
investing in the Fund. It should be read and retained for future reference.
Additional information about the Fund is contained in the Statement of
Additional Information, dated June 1, 1995, which has been filed with the
Securities and Exchange Commission, and which is available at no charge upon
request of the Fund at the address or telephone numbers listed below. The
Statement of Additional Information is incorporated herein by reference.

SHARES OF THE FUND ARE NOT DEPOSITS OR OBLIGATIONS OF, OR GUARANTEED OR ENDORSED
BY, ANY BANK, AND THE SHARES ARE NOT FEDERALLY INSURED BY THE FEDERAL DEPOSIT
INSURANCE CORPORATION, THE FEDERAL RESERVE BOARD, OR ANY OTHER AGENCY.

DEAN WITTER
HIGH INCOME SECURITIES
TWO WORLD TRADE CENTER
NEW YORK, NEW YORK 10048

(212) 392-2550 or (800) 526-3143

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  THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE COMMISSION OR
  ANY STATE SECURITIES COMMISSION PASSED UPON THE ACCURACY OR ADEQUACY OF THIS
     PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.

   
                   DEAN WITTER DISTRIBUTORS INC., DISTRIBUTOR
    
<PAGE>
PROSPECTUS SUMMARY
- --------------------------------------------------------------------------------

   
<TABLE>
<S>             <C>
THE FUND        The Fund is organized as a Trust, commonly known as a Massachusetts business trust, and
                is an open-end diversified management investment company investing principally in
                lower-rated fixed- income securities.
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SHARES OFFERED  Shares of beneficial interest with $0.01 par value (see page 16).
- -------------------------------------------------------------------------------------------------------

OFFERING        At net asset value without sales charge (see page 10). Shares redeemed within five years
PRICE           of purchase are subject to a contingent deferred sales charge under most circumstances
                (see page 14).
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MINIMUM         Minimum initial investment, $1,000; minimum subsequent investment, $100 (see page 10).
PURCHASE
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INVESTMENT      A high level of current income primarily; capital appreciation is secondary (see page
OBJECTIVE       5).
- -------------------------------------------------------------------------------------------------------

INVESTMENT      Dean Witter InterCapital Inc., the Investment Manager of the Fund, and its wholly-owned
MANAGER         subsidiary, Dean Witter Services Company Inc., serve in various investment management,
                advisory, management and administrative capacities to ninety-three investment companies
                and other portfolios with assets of approximately $70.3 billion at April 30, 1995 (see
                page 4).
- -------------------------------------------------------------------------------------------------------

MANAGEMENT      The Investment Manager receives a monthly fee at the annual rate of 0.50% of average
FEE             daily net assets. The fee should not be compared with fees paid by other investment
                companies without also considering applicable sales loads and distribution fees,
                including those noted below (see page 4).
- -------------------------------------------------------------------------------------------------------

DIVIDENDS AND   Income dividends are declared and paid monthly; capital gains, if any, may be
CAPITAL GAINS   distributed at least annually. Dividends and distributions are automatically reinvested
DISTRIBUTIONS   in additional shares at net asset value (without sales charge), unless the shareholder
                elects to receive cash (see page 15).
- -------------------------------------------------------------------------------------------------------

DISTRIBUTOR     Dean Witter Distributors Inc. (the "Distributor"). The Distributor receives from the
AND             Fund, pursuant to a Rule 12b-1 Plan of Distribution, a distribution fee accrued daily
DISTRIBUTION    and payable monthly at the rate of 0.80% per annum of the lesser of (i) the Fund's
FEE             average daily aggregate net sales or (ii) the Fund's average daily net assets. This fee
                compensates the Distributor for the services provided in distributing shares of the Fund
                and for its sales-related expenses. The Distributor also receives the proceeds of any
                contingent deferred sales charges (see pages 11 and 14).
- -------------------------------------------------------------------------------------------------------

REDEMPTION--    At net asset value; redeemable involuntarily if total value of the account is less than
CONTINGENT      $100. Although no commission or sales charge is imposed upon the purchase of shares, a
DEFERRED        contingent deferred sales charge (scaled down from 4% to 1%) is imposed on any
SALES CHARGE    redemption of shares if after such redemption the aggregate current value of an account
                with the Fund falls below the aggregate amount of the investor's purchase payments made
                during the five years preceding the redemption. However, there is no charge imposed on
                redemption of shares purchased through reinvestment of dividends or distributions (see
                pages 14-15).
- -------------------------------------------------------------------------------------------------------

RISKS           Compared with higher rated, lower yielding fixed-income securities, portfolio securities
                of the Fund may be subject to greater risk of loss of income and principal and greater
                risk of increases and decreases in net asset value due to market fluctuations. The Fund
                may also purchase when-issued and delayed delivery, when, as and if issued securities,
                restricted securities, and zero coupon securities, rights and warrants, convertible
                securities, foreign securities, common stock and adjustable rate mortgages and enter
                into repurchase agreements, reverse repurchase agreements and dollar rolls, options and
                futures transactions and forward foreign currency exchange contracts, all of which
                involve certain special risks. Investors should review the investment objectives and
                policies of the Fund carefully and consider their ability to assume the risks involved
                in purchasing shares of the Fund (see pages 5-10).
- -------------------------------------------------------------------------------------------------------
</TABLE>
    

  THE ABOVE IS QUALIFIED IN ITS ENTIRETY BY THE DETAILED INFORMATION APPEARING
                          ELSEWHERE IN THE PROSPECTUS
                AND IN THE STATEMENT OF ADDITIONAL INFORMATION.

2
<PAGE>
SUMMARY OF FUND EXPENSES
- --------------------------------------------------------------------------------

The  following table illustrates all expenses and fees that a shareholder of the
Fund will incur. The expenses and fees set forth in the table are for the fiscal
year ending March 31, 1996.

<TABLE>
<S>                                                 <C>
SHAREHOLDER TRANSACTION EXPENSES
Maximum Sales Charge Imposed on Purchases.........   None
Maximum Sales Charge Imposed on Reinvested
 Dividends........................................   None
Contingent Deferred Sales Charge
 (as a percentage of the lesser of original
 purchase price or redemption proceeds)...........   4.0%
</TABLE>

 A contingent deferred sales charge is imposed at the following declining rates:

<TABLE>
<CAPTION>
YEAR SINCE PURCHASE PAYMENT MADE                    PERCENTAGE
- --------------------------------------------------  -----------
<S>                                                 <C>
First.............................................      4.0%
Second............................................      3.0%
Third.............................................      2.0%
Fourth............................................      2.0%
Fifth.............................................      1.0%
Sixth and thereafter..............................     None
</TABLE>

<TABLE>
<S>                                                 <C>
Redemption Fees...................................   None
Exchange Fees.....................................   None

ANNUAL FUND OPERATING EXPENSES (AS A PERCENTAGE OF
 AVERAGE NET ASSETS)
Management Fees...................................  0.50%
12b-1 Fees*.......................................  0.80%
Other Expenses....................................  0.35%
Total Fund Operating Expenses**...................  1.65%
    "Management Fees" and  "12b-1 Fees," as  shown above,  are
for  the fiscal year of the Fund ending March 31, 1996. "Other
Expenses," as shown above, is based upon the estimated amounts
of expenses of the Fund for  the fiscal year ending March  31,
1996.
<FN>
- ------------------------
 * A portion of the 12b-1 fee equal to 0.20% of the Fund's average daily net
   assets is characterized as a service fee within the meaning of National
   Association of Securities Dealers, Inc. ("NASD") guidelines (see "Purchase of
   Fund Shares").
** "Total Fund Operating Expenses," as shown above, is based upon the sum of the
   12b-1 Fees, Management Fees and estimated "Other Expenses" which may be
   incurred by the Fund.
</TABLE>

<TABLE>
<CAPTION>
EXAMPLE                                             1 YEAR    3 YEARS
- --------------------------------------------------  -------   -------
<S>                                                 <C>       <C>
You  would pay the following  expenses on a $1,000
 investment, assuming (1) 5% annual return and (2)
 redemption at the end of each time period:.......    $57       $72
You would pay the  following expenses on the  same
 investment, assuming no redemption:..............    $17       $52
</TABLE>

    THE  ABOVE  EXAMPLE SHOULD  NOT BE  CONSIDERED A  REPRESENTATION OF  PAST OR
FUTURE EXPENSES OR PERFORMANCE.  ACTUAL EXPENSES OF THE  FUND MAY BE GREATER  OR
LESS THAN THOSE SHOWN.

    The  purpose of this  table is to  assist the investor  in understanding the
various costs and expenses that  an investor in the  Fund will bear directly  or
indirectly.  For a  more complete description  of these costs  and expenses, see
"The Fund  and its  Management,"  "Plan of  Distribution" and  "Redemptions  and
Repurchases."

    Long-term  shareholders  of  the Fund  may  pay  more in  sales  charges and
distribution fees than the  economic equivalent of  the maximum front-end  sales
charges permitted by the NASD.

                                                                               3
<PAGE>
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------

The  following ratios  and per  share data  for a  share of  beneficial interest
outstanding throughout the  period have  been audited by  Price Waterhouse  LLP,
independent  accountants. The financial highlights should be read in conjunction
with the  financial statements,  notes thereto,  and the  unqualified report  of
independent  accountants,  which are  contained in  the Statement  of Additional
Information. Further information about the performance of the Fund is  contained
in  the  Fund's Annual  Report to  Shareholders, which  may be  obtained without
charge upon request to the Fund.

<TABLE>
<CAPTION>
                                                                 FOR THE PERIOD
                                                                 JUNE 2, 1994*
                                                                    THROUGH
                                                                 MARCH 31, 1995
                                                                ----------------
<S>                                                             <C>
PER SHARE OPERATING PERFORMANCE:
Net asset value, beginning of period..........................       $10.00
                                                                     ------
  Net investment income.......................................         0.75
  Net realized and unrealized loss............................        (0.26)
                                                                     ------
  Total from investment operations............................         0.49
                                                                     ------
  Less dividends from net investment income...................        (0.72)
                                                                     ------
  Net asset value, end of period..............................       $ 9.77
                                                                     ------
                                                                     ------
TOTAL INVESTMENT RETURN+......................................         5.19%(1)
RATIOS TO AVERAGE NET ASSETS:
  Expenses....................................................         1.55%(2)(3)
  Net investment income.......................................        10.85%(2)(3)
SUPPLEMENTAL DATA:
  Net assets, end of period, in thousands.....................      $168,881
  Portfolio turnover rate.....................................           53%(1)
<FN>
- ------------------------
 *  COMMENCEMENT OF OPERATIONS.
 +  DOES NOT REFLECT THE DEDUCTION OF SALES CHARGE.
(1) NOT ANNUALIZED.
(2) ANNUALIZED.
(3) IF THE FUND HAD BORNE ALL THE EXPENSES THAT WERE ASSUMED OR WAIVED BY THE
    INVESTMENT MANAGER, THE ABOVE ANNUALIZED EXPENSE AND NET INVESTMENT RATIOS
    WOULD HAVE BEEN 1.65% AND 10.75%, RESPECTIVELY.
</TABLE>

                       SEE NOTES TO FINANCIAL STATEMENTS

THE FUND AND ITS MANAGEMENT
- --------------------------------------------------------------------------------

Dean Witter  High Income  Securities  (the "Fund")  is an  open-end  diversified
management investment company. The Fund is a trust of the type commonly known as
a  "Massachusetts  business  trust" and  was  organized  under the  laws  of The
Commonwealth of Massachusetts on March 23, 1994.

    Dean Witter InterCapital Inc. ("InterCapital" or the "Investment  Manager"),
whose address is Two World Trade Center, New York, New York 10048, is the Fund's
Investment  Manager.  The Investment  Manager, which  was incorporated  in July,
1992, is a wholly-owned  subsidiary of Dean Witter,  Discover & Co. ("DWDC"),  a
balanced  financial services organization providing  a broad range of nationally
marketed credit and investment products.

    InterCapital and its wholly-owned  subsidiary, Dean Witter Services  Company
Inc.,   serve  in  various  investment   management,  advisory,  management  and
administrative capacities to ninety-three investment companies (the "Dean Witter
Funds"), thirty  of  which are  listed  on the  New  York Stock  Exchange,  with
combined assets of approximately $68.1 billion at April 30, 1995. The Investment
Manager  also  manages  portfolios  of  pension  plans,  other  institutions and
individuals which aggregated approximately $2.2 billion at such date.

    The Fund  has  retained the  Investment  Manager to  provide  administrative
services,  manage its business  affairs and manage the  investment of the Fund's
assets, including the placing of orders  for the purchase and sale of  portfolio
securities.  InterCapital  has retained  Dean  Witter Services  Company  Inc. to
perform the  aforementioned administrative  services for  the Fund.  The  Fund's
Board  of  Trustees  reviews  the  various services  provided  by  or  under the
direction of the Investment Manager to ensure that the Fund's general investment
policies and programs  are being  properly carried out  and that  administrative
services are being provided to the Fund in a satisfactory manner.

    As  full compensation for the services  and facilities furnished to the Fund
and for expenses of the  Fund assumed by the  Investment Manager, the Fund  pays
the Investment Manager monthly compensation calculated

4
<PAGE>
daily  by applying the annual rate of  0.50% to the Fund's net assets determined
as of the close of  each business day. The Fund's  expenses include: the fee  of
the  Investment  Manager; the  fee  pursuant to  the  Plan of  Distribution (see
"Purchase of Fund Shares"); taxes; certain legal, transfer agent, custodian  and
auditing fees; and printing and other expenses relating to the Fund's operations
which  are not expressly assumed by  the Investment Manager under its Investment
Management Agreement with the Fund.

INVESTMENT OBJECTIVES AND POLICIES
- --------------------------------------------------------------------------------

The primary investment objective of the Fund is to earn a high level of  current
income.  As a secondary objective, the  Fund will seek capital appreciation, but
only when  consistent  with  its primary  objective.  Capital  appreciation  may
result,  for example, from  an improvement in  the credit standing  of an issuer
whose securities are held in the Fund's  portfolio or from a general decline  in
interest  rates, or a combination of  both. Conversely, capital depreciation may
result, for  example,  from a  lowered  credit standing  or  a general  rise  in
interest  rates,  or a  combination  of both.  There  is no  assurance  that the
objectives will be achieved. The objectives are fundamental policies of the Fund
and may not  be changed  without the approval  of the  Fund's shareholders.  The
following  policies may be  changed by the  Fund's Trustees, without shareholder
approval.

    The  higher  yields  sought  by  the  Fund  are  generally  obtainable  from
securities rated in the lower categories by recognized rating services. The Fund
seeks  high current income by  investing principally (at least  65% of its total
assets) in  fixed-income  securities rated  Ba  or lower  by  Moody's  Investors
Service,  Inc.  ("Moody's"), or  BB or  lower by  Standard &  Poor's Corporation
("Standard &  Poor's"). Fixed-income  securities  rated Ba  or  BB or  lower  by
Moody's  and Standard &  Poor's, respectively, are  considered to be speculative
investments. Furthermore,  the Fund  does not  have any  minimum quality  rating
standard  for its investments. As such, the  Fund may invest in securities rated
as low as Caa, Ca or C by Moody's or  CCC, CC, C, CI or D by Standard &  Poor's.
Fixed-income  securities rated Caa or Ca by Moody's may already be in default on
payment of interest or principal, while  bonds rated C by Moody's, their  lowest
bond  rating,  can  be  regarded  as having  extremely  poor  prospects  of ever
attaining any real investment standing  (the Fund may purchase securities  which
are  in default  and which,  thereby, are  not paying  its fixed-income security
holders principal and/or interest).  Bonds rated D by  Standard & Poor's,  their
lowest  bond rating,  are in  payment default. For  a further  discussion of the
characteristics and  risks  associated with  high  yield securities,  see  "Risk
Considerations"  below. A description of corporate  bond ratings is contained in
the Appendix.

    Non-rated securities will also be considered for investment by the Fund when
the Investment Manager believes that the  financial condition of the issuers  of
such  securities,  or the  protection afforded  by the  terms of  the securities
themselves, makes  them  appropriate  investments for  the  Fund.  Under  normal
circumstances, the dollar-weighted average maturity of the Fund's portfolio will
be between five and ten years.

    Up  to  35% of  the Fund's  total  assets may,  under normal  conditions, be
invested in  common  stocks;  fixed-income securities  convertible  into  common
stocks;  warrants  to  purchase  common  stocks;  investment  grade fixed-income
securities; U.S.  Government securities;  mortgage-backed securities,  financial
futures contracts and options thereon; index options; options on debt and equity
securities;  private placements;  repurchase agreements;  and reverse repurchase
agreements. In addition, any or all of the above 35% of total assets portion  of
the Fund's portfolio may be comprised of securities issued by foreign issuers.

    Pending investment of proceeds from the sale of shares of the Fund or of its
portfolio  securities or  at other times  when market conditions  dictate a more
"defensive" investment  strategy, the  Fund may  invest without  limit in  money
market  instruments, including commercial paper  of corporations organized under
the  laws  of  any  state  or  political  subdivision  of  the  United   States,
certificates  of deposit, bankers' acceptances and other obligations of domestic
banks or domestic  branches of foreign  banks, or foreign  branches of  domestic
banks,  in  each  case  having  total  assets  of  at  least  $500  million, and
obligations issued or  guaranteed by  the United States  Government, or  foreign
governments  or  their respective  instrumentalities or  agencies. The  yield on
these securities  will  generally tend  to  be lower  than  the yield  on  other
securities  to  be purchased  by  the Fund.  To  the extent  the  Fund purchases
Eurodollar certificates of deposit issued by foreign branches of domestic United
States banks, consideration will be  given to their domestic marketability,  the
lower  reserve requirements  normally mandated for  overseas banking operations,
the possible  impact of  interruptions  in the  flow of  international  currency
transactions  and economic developments which might adversely affect the payment
of principal or interest.

    All fixed-income securities are  subject to two types  of risks: the  credit
risk  and the interest rate risk. The credit  risk relates to the ability of the
issuer to  meet  interest  or principal  payments  or  both as  they  come  due.
Generally,  higher yielding  bonds are  subject to  a credit  risk to  a greater
extent than  higher  quality  bonds.  The  interest  rate  risk  refers  to  the
fluctuations  in net  asset value  of any  portfolio of  fixed-income securities
resulting solely from the inverse relationship between price and yield of fixed-
income securities; that is, when the general level of interest rates rises,  the
prices  of  outstanding  fixed-income  securities  generally  decline,  and when
interest rates fall, prices generally rise.

    The ratings of fixed-income securities by Moody's and Standard & Poor's  are
a  generally accepted barometer of credit risk. However, as the creditworthiness
of issuers of

                                                                               5
<PAGE>
lower-rated fixed-income securities is more  problematical than that of  issuers
of   higher-rated  fixed-income  securities,  the   achievement  of  the  Fund's
investment objectives will be more  dependent upon the Investment Manager's  own
credit analysis than would be the case with a mutual fund investing primarily in
higher  quality bonds. The  Investment Manager will  utilize a security's credit
rating as  simply  one  indication  of an  issuer's  creditworthiness  and  will
principally  rely upon its  own analysis of  any security currently  held by the
Fund or potentially purchasable by the Fund for its portfolio.

    In determining which securities to purchase or hold for the Fund's portfolio
and in seeking to reduce credit and interest rate risks, the Investment  Manager
will  rely on  information from  various sources,  including: the  rating of the
security; research, analysis  and appraisals of  brokers and dealers,  including
DWR; the views of the Fund's Trustees and others regarding economic developments
and  interest rate trends; and the  Investment Manager's own analysis of factors
it deems relevant. The extent to  which the Investment Manager is successful  in
reducing  depreciation or  losses arising  from either  interest rate  or credit
risks depends in part  on the Investment  Manager's portfolio management  skills
and  judgment in  evaluating the factors  affecting the value  of securities. No
assurance can be given regarding the degree of success that will be achieved.

RISK CONSIDERATIONS

Because  of  the  special  nature  of  the  Fund's  investment  in  high  income
securities,  commonly  known as  junk bonds,  the  Investment Manager  must take
account of certain special considerations in assessing the risks associated with
such investments. Although the  growth of the high  income securities market  in
the  1980s had paralleled a long  economic expansion, recently many issuers have
been affected by adverse economic and market conditions. It should be recognized
that an economic  downturn or increase  in interest  rates is likely  to have  a
negative  effect on  the high income  bond market and  on the value  of the high
income securities held by the Fund, as well as on the ability of the securities'
issuers to repay principal and interest on their borrowings.

    The prices of high income securities have been found to be less sensitive to
changes in  prevailing interest  rates than  higher-rated investments,  but  are
likely  to be more sensitive to adverse economic changes or individual corporate
developments. During  an  economic  downturn or  substantial  period  of  rising
interest  rates, highly leveraged issuers  may experience financial stress which
would adversely affect  their ability  to service their  principal and  interest
payment  obligations,  to  meet  their projected  business  goals  or  to obtain
additional financing. If the issuer of a fixed-income security owned by the Fund
defaults, the Fund may incur additional expenses to seek recovery. In  addition,
periods  of economic  uncertainty and  change can  be expected  to result  in an
increased  volatility  of  market  prices  of  high  income  securities  and   a
concomitant  volatility in the net asset value of a share of the Fund. Moreover,
the market  prices of  certain  of the  Fund's  portfolio securities  which  are
structured  as  zero coupon  and payment-in-kind  securities  are affected  to a
greater extent by  interest rate changes  and thereby tend  to be more  volatile
than  securities which  pay interest periodically  and in  cash (see "Dividends,
Distributions  and  Taxes"  for  a  discussion  of  the  tax  ramifications   of
investments in such securities).

    The  secondary market for high income securities may be less liquid than the
markets for higher quality securities and,  as such, may have an adverse  effect
on  the market prices of certain securities. The limited liquidity of the market
may also adversely affect the ability of the Fund's Trustees to arrive at a fair
value for certain  high income  securities at certain  times and  could make  it
difficult  for the Fund  to sell certain  securities. In addition,  new laws and
proposed new laws  may have  an adverse  effect upon  the value  of high  income
securities and a concomitant negative impact upon the net asset value of a share
of the Fund.

    During  the fiscal period ended March  31, 1995, the monthly dollar weighted
average ratings  of  the debt  obligations  held by  the  Fund, expressed  as  a
percentage of the Fund's total investments, were as follows:

<TABLE>
<CAPTION>
                                              PERCENTAGE OF
                 RATINGS                    TOTAL INVESTMENTS
- -----------------------------------------  -------------------
<S>                                        <C>
AAA/Aaa..................................            48.7%
AA/Aa....................................             0.0%
A/A......................................             0.0%
BBB/Baa..................................             0.0%
BB/Ba....................................             5.6%
B/B......................................            38.3%
CCC/Caa..................................             6.5%
CC/Ca....................................             0.0%
C/C......................................             0.0%
Unrated..................................             0.9%
                                                  -----
                                                    100.0%
</TABLE>

REPURCHASE AGREEMENTS.  The Fund may enter into repurchase agreements, which may
be  viewed as a type of secured lending by the Fund, and which typically involve
the acquisition  by  the Fund  of  debt  securities, from  a  selling  financial
institution  such as a bank, savings  and loan association or broker-dealer. The
agreement provides that the Fund will sell back to the institution, and that the
institution will repurchase, the underlying security at a specified price and at
a fixed time in the  future, usually not more than  seven days from the date  of
purchase.  While repurchase agreements involve certain risks not associated with
direct investments  in  debt  securities,  including the  risks  of  default  or
bankruptcy  of the selling financial institution, the Fund follows procedures to
minimize such risks. These procedures include effecting repurchase  transactions
only  with large,  well-capitalized and  well-established financial institutions
and maintaining adequate collateralization.

WHEN-ISSUED AND DELAYED DELIVERY SECURITIES AND FORWARD COMMITMENTS.  From  time
to time, in the ordinary course of business, the Fund may purchase securities on
a  when-issued or delayed delivery basis or may purchase or sell securities on a
forward commitment basis. When  such transactions are  negotiated, the price  is
fixed  at the time of the commitment, but  delivery and payment can take place a
month   or   more   after    the   date   of    the   commitment.   While    the

6
<PAGE>
Fund will only purchase securities on a when-issued, delayed delivery or forward
commitment  basis with the  intention of acquiring the  securities, the Fund may
sell the securities before the settlement  date, if it is deemed advisable.  The
securities  so  purchased  or sold  are  subject  to market  fluctuation  and no
interest accrues  to  the purchaser  during  this  period. An  increase  in  the
percentage  of the Fund's  assets committed to  the purchase of  securities on a
when-issued, delayed  delivery  or forward  commitment  basis may  increase  the
volatility of the Fund's net asset value.

WHEN, AS AND IF ISSUED SECURITIES.  The Fund may purchase securities on a "when,
as  and if issued" basis  under which the issuance  of the security depends upon
the occurrence of a  subsequent event, such as  approval of a merger,  corporate
reorganization, leveraged buyout or debt restructuring. If the anticipated event
does  not occur and  the securities are not  issued, the Fund  will have lost an
investment opportunity.  There is  no overall  limit on  the percentage  of  the
Fund's  assets which may be committed to  the purchase of securities on a "when,
as and if  issued" basis. An  increase in  the percentage of  the Fund's  assets
committed  to the purchase of securities on a "when, as and if issued" basis may
increase the volatility of its net asset value.

PRIVATE PLACEMENTS.   The  Fund may  invest up  to 10%  of its  total assets  in
securities  which are  subject to restrictions  on resale because  they have not
been registered under the  Securities Act of 1933,  as amended (the  "Securities
Act"),  or which are otherwise not  readily marketable. (Securities eligible for
resale pursuant to  Rule 144A  under the Securities  Act, and  determined to  be
liquid  pursuant to the procedures discussed in the following paragraph, are not
subject to the foregoing restriction.)  These securities are generally  referred
to  as private placements or restricted securities. Limitations on the resale of
such securities  may have  an adverse  effect on  their marketability,  and  may
prevent  the Fund from disposing of them promptly at reasonable prices. The Fund
may have to bear the expense of  registering such securities for resale and  the
risk of substantial delays in effecting such registration.

    The  Securities  and Exchange  Commission has  adopted  Rule 144A  under the
Securities Act,  which  permits  the  Fund  to  sell  restricted  securities  to
qualified  institutional  buyers  without  limitation.  The  Investment Manager,
pursuant to  procedures  adopted  by the  Trustees  of  the Fund,  will  make  a
determination  as to the liquidity of  each restricted security purchased by the
Fund. If a restricted security is determined to be "liquid", such security  will
not  be included within the category  "illiquid securities", which under current
policy may not exceed 15% of the Fund's net assets.

REVERSE REPURCHASE AGREEMENTS AND DOLLAR ROLLS.   The Fund may also use  reverse
repurchase  agreements  and dollar  rolls as  part  of its  investment strategy.
Reverse repurchase  agreements involve  sales by  the Fund  of portfolio  assets
concurrently  with an agreement by  the Fund to repurchase  the same assets at a
later date at a fixed price. The Fund  may enter into dollar rolls in which  the
Fund  sells securities and simultaneously  contracts to repurchase substantially
similar (same type and  coupon) securities on a  specified future date.  Reverse
repurchase agreements and dollar rolls involve the risk that the market value of
the  securities  the Fund  is obligated  to repurchase  under the  agreement may
decline below the repurchase price. In the event the buyer of securities under a
reverse repurchase  agreement or  dollar roll  files for  bankruptcy or  becomes
insolvent, the Fund's use of proceeds of the agreement may be restricted pending
a  determination by  the other  party, or  its trustee  or receiver,  whether to
enforce the Fund's obligation to  repurchase the securities. Reverse  repurchase
agreements  and dollar rolls are  speculative techniques involving leverage, and
are considered borrowings by the Fund.

ZERO COUPON SECURITIES.  A portion  of the fixed-income securities purchased  by
the  Fund may  be zero  coupon securities.  Such securities  are purchased  at a
discount from their face amount, giving the purchaser the right to receive their
full value at maturity. The interest  earned on such securities is,  implicitly,
automatically  compounded and paid out at  maturity. While such compounding at a
constant rate eliminates the risk of receiving lower yields upon reinvestment of
interest if  prevailing interest  rates  decline, the  owner  of a  zero  coupon
security  will be  unable to participate  in higher yields  upon reinvestment of
interest received  on interest-paying  securities if  prevailing interest  rates
rise.  For  this reason,  zero coupon  securities  are subject  to substantially
greater price fluctuations during periods of changing prevailing interest  rates
than  are comparable securities which pay  interest currently. The Fund may have
to sell a portion of its holdings of zero coupon securities to enable it to meet
a certain level of distributions.

RIGHTS AND WARRANTS.   The  Fund may acquire  rights and/or  warrants which  are
attached  to  other  securities in  its  portfolio,  or which  are  issued  as a
distribution by the issuer  of a security held  in its portfolio. Rights  and/or
warrants  are, in  effect, options to  purchase equity securities  at a specific
price, generally valid for a specific period of time, and have no voting rights,
pay no dividends  and have  no rights with  respect to  the corporation  issuing
them.

CONVERTIBLE SECURITIES.  Among the fixed-income securities in which the Fund may
invest   are  "convertible"  securities.  A  convertible  security  is  a  bond,
debenture, note, preferred stock or other security that may be converted into or
exchanged for a prescribed  amount of common  stock of the  same or a  different
issuer  within a  particular period  of time  at a  specified price  or formula.
Convertible securities rank senior to  common stocks in a corporation's  capital
structure  and, therefore, entail less risk than the corporation's common stock.
The value of a convertible security is a function of its "investment value" (its
value as if it did not have a conversion privilege), and its "conversion  value"
(the    security's   worth    if   it   were    to   be    exchanged   for   the

                                                                               7
<PAGE>
underlying security, at  market value,  pursuant to  its conversion  privilege).
Fluctuations  in the prices of an underlying security will affect the conversion
value and  cause a  concomitant  fluctuation in  the  price of  the  convertible
security.

FOREIGN  SECURITIES.   The Fund may  invest in securities  of foreign companies.
Foreign securities investments may be affected  by changes in currency rates  or
exchange  control regulations, change in governmental administration or economic
or monetary policy (in the United States and abroad) or changed circumstances in
dealings between nations. Costs will be incurred in connection with  conversions
between  various currencies held by the  Fund. Investments in foreign securities
will also occasion risks relating to political and economic developments abroad,
including  the   possibility  of   expropriations  or   confiscatory   taxation,
limitations  on the use  or transfer of  Fund assets and  any effects of foreign
social, economic or political instability.

FORWARD FOREIGN CURRENCY EXCHANGE  CONTRACTS.  The Fund  may enter into  forward
foreign  currency exchange  contracts ("forward  contracts") as  a hedge against
fluctuations in future foreign exchange rates. The Fund will conduct its foreign
currency exchange transactions either on a  spot (i.e., cash) basis at the  spot
rate  prevailing in  the foreign currency  exchange market,  or through entering
into forward  contracts  to  purchase  or sell  foreign  currencies.  A  forward
contract  involves an obligation  to purchase or  sell a specific  currency at a
future date, which may be any fixed number of days from the date of the contract
agreed upon by the parties, at a price  set at the time of the contract.  Should
forward  prices decline  during the  period between  the Fund's  entering into a
forward contract for the sale of a foreign currency and the date it enters  into
an  offsetting contract for the purchase of  the foreign currency, the Fund will
realize a gain to  the extent the price  of the currency it  has agreed to  sell
exceeds  the price  of the  currency it has  agreed to  purchase. Should forward
prices increase, the  Fund will suffer  a loss to  the extent the  price of  the
currency  it has  agreed to purchase  exceeds the  price of the  currency it has
agreed to sell.

COMMON STOCKS.  The Fund may directly purchase common stocks on the open market.
In addition, the Fund may acquire common stocks when they are included in a unit
with fixed-income securities purchased by the Fund; when fixed-income securities
held by the  Fund are  converted to  equity issues;  when the  Fund exercises  a
warrant;  and when the Fund purchases the  common stock of companies involved in
takeovers or recapitalization, where the issuer or a stockholder has offered, or
pursuant to a "going private" transaction is effecting, a transaction  involving
the  issuance of  newly issued  fixed-income securities  to the  holders of such
common stock.

    The prices  of  common stock  are  generally  more volatile  than  those  of
fixed-income  securities. Moreover, not all common stock pay dividends and those
that do generally pay lower amounts than most fixed-income securities. The  Fund
will  only purchase common stocks directly  when the Investment Manager believes
that their purchase will assist the Fund in meeting its investment objectives.

ADJUSTABLE RATE MORTGAGE  SECURITIES.  The  Fund may also  invest in  adjustable
rate  mortgage securities  ("ARMs"), which are  pass-through mortgage securities
collateralized by  mortgages  with  adjustable rather  than  fixed  rates.  ARMs
eligible  for inclusion in a mortgage pool generally provide for a fixed initial
mortgage interest  rate for  either the  first three,  six, twelve  or  thirteen
scheduled  monthly  payments.  Thereafter,  the interest  rates  are  subject to
periodic adjustment based on changes to a designated benchmark index.

    ARMs contain maximum and  minimum rates beyond  which the mortgage  interest
rate  may not vary over the lifetime  of the security. In addition, certain ARMs
provide for additional limitations on the  maximum amount by which the  mortgage
interest  rate  may  adjust  for any  single  adjustment  period. Alternatively,
certain ARMs contain limitations on changes in the required monthly payment.  In
the  event that a monthly payment is not sufficient to pay the interest accruing
on an ARM, any  such excess interest  is added to the  principal balance of  the
mortgage  loan, which is repaid through  future monthly payments. If the monthly
payment for such an instrument  exceeds the sum of  the interest accrued at  the
applicable  mortgage interest  rate and the  principal payment  required at such
point to amortize the outstanding principal  balance over the remaining term  of
the  loan,  the excess  is  utilized to  reduce  the then  outstanding principal
balance of the ARM.

INVESTMENT IN REAL ESTATE INVESTMENT TRUSTS.  The Fund may invest in real estate
investment trusts,  which pool  investors' funds  for investments  primarily  in
commercial  real estate properties. Investment  in real estate investment trusts
may be the most  practical available means  for the Fund to  invest in the  real
estate industry (the Fund is prohibited from investing in real estate directly).
As  a shareholder  in a real  estate investment  trust, the Fund  would bear its
ratable share  of the  real estate  investment trust's  expenses, including  its
advisory  and administration fees. At  the same time the  Fund would continue to
pay its own investment management fees and other expenses, as a result of  which
the  Fund and its shareholders  in effect will be  absorbing duplicate levels of
fees with respect to investments in real estate investment trusts.

OPTIONS AND FUTURES TRANSACTIONS

The Fund  may  purchase and  sell  (write) call  and  put options  on  portfolio
securities  which are denominated  in either U.S.  dollars or foreign currencies
and on the U.S. dollar and foreign currencies, which are or may in the future be
listed on  several U.S.  and  foreign securities  exchanges  or are  written  in
over-the-counter transactions ("OTC options"). OTC options are purchased from or
sold  (written) to  dealers or  financial institutions  which have  entered into
direct agreements with the Fund.

    The Fund is permitted to write covered call options on portfolio  securities
and the U.S. dollar and foreign
curren-

8
<PAGE>
cies,  without limit, in  order to hedge against  the decline in  the value of a
security or currency in which such  security is denominated, to earn  additional
income  and to close out long call  option positions. The Fund may write covered
put options, under which the Fund incurs  an obligation to buy the security  (or
currency)  underlying the option from  the purchaser of the  put at the option's
exercise price  at  any  time  during the  option  period,  at  the  purchaser's
election.

    The  Fund  may purchase  listed  and OTC  call  and put  options  in amounts
equalling up to 5% of  its total assets. The Fund  may purchase call options  to
close out a covered call position or to protect against an increase in the price
of  a security it  anticipates purchasing or, in  the case of  call options on a
foreign currency,  to hedge  against  an adverse  exchange  rate change  of  the
currency  in  which  the  security  it  anticipates  purchasing  is  denominated
vis-a-vis the currency in which the exercise price is denominated. The Fund  may
purchase  put options on securities  which it holds in  its portfolio to protect
itself against a decline in the value  of the security and to close out  written
put  positions in a manner similar to call option closing purchase transactions.
There are  no other  limits  on the  Fund's ability  to  purchase call  and  put
options.

    The  Fund may purchase and sell futures contracts that are currently traded,
or may in  the future  be traded,  on U.S.  and foreign  commodity exchanges  on
underlying  portfolio securities, on any  currency ("currency" futures), on U.S.
and foreign  fixed-income  securities  ("interest rate"  futures)  and  on  such
indexes  of U.S. or  foreign equity or  fixed-income securities as  may exist or
come into being ("index" futures). The  Fund may purchase or sell interest  rate
futures  contracts for the  purpose of hedging some  or all of  the value of its
portfolio securities (or  anticipated portfolio securities)  against changes  in
prevailing interest rates. The Fund may purchase or sell index futures contracts
for  the  purpose  of hedging  some  or  all of  its  portfolio  (or anticipated
portfolio) securities against changes in their prices (or the currency in  which
they  are  denominated). As  a futures  contract purchaser,  the Fund  incurs an
obligation to take delivery of a  specified amount of the obligation  underlying
the  contract at  a specified  time in the  future for  a specified  price. As a
seller of  a futures  contract, the  Fund incurs  an obligation  to deliver  the
specified  amount of the underlying obligation at a specified time in return for
an agreed upon price.

    The Fund  also  may purchase  and  write call  and  put options  on  futures
contracts  which are traded  on an exchange and  enter into closing transactions
with respect to such options to terminate an existing position.

    New futures  contracts, options  and other  financial products  and  various
combinations  thereof continue to be developed. The  Fund may invest in any such
futures, options or products as may be developed, to the extent consistent  with
its investment objective and applicable regulatory requirements.

RISKS  OF OPTIONS AND FUTURES TRANSACTIONS.  The Fund may close out its position
as writer of an option, or as a buyer or seller of a futures contract, only if a
liquid secondary market exists for options or futures contracts of that  series.
There is no assurance that such a market will exist, particularly in the case of
OTC options, as such options may generally only be closed out by entering into a
closing  purchase transaction  with the  purchasing dealer.  Also, exchanges may
limit the amount by which  the price of many futures  contracts may move on  any
day.  If the price moves  equal the daily limit on  successive days, then it may
prove impossible to  liquidate a futures  position until the  daily limit  moves
have ceased.

    While the futures contracts and options transactions to be engaged in by the
Fund  for  the  purpose  of  hedging the  Fund's  portfolio  securities  are not
speculative in nature, there are risks inherent in the use of such  instruments.
One  such  risk  is  that  the Investment  Manager  could  be  incorrect  in its
expectations as to  the direction or  extent of various  interest rate or  price
movements  or the time span within which  the movements take place. For example,
if the Fund sold futures contracts for the sale of securities in anticipation of
an increase  in interest  rates,  and then  interest  rates went  down  instead,
causing  bond prices  to rise,  the Fund  would lose  money on  the sale  of the
futures contract. Another risk which  will arise in employing futures  contracts
to  protect against  the price  volatility of  portfolio securities  is that the
prices of securities, currencies and  indexes subject to futures contracts  (and
thereby the futures contract prices) may correlate imperfectly with the behavior
of  the U.S.  dollar cash  prices of the  Fund's portfolio  securities and their
denominated currencies.  See  the  Statement of  Additional  Information  for  a
further discussion of risks.

PORTFOLIO MANAGEMENT

The  Fund's portfolio is actively managed by  its Investment Manager with a view
to achieving the Fund's investment objective. In determining which securities to
purchase for the Fund  or hold in the  Fund's portfolio, the Investment  Manager
will  rely on information from various sources, including research, analysis and
appraisals of brokers and dealers, including Dean Witter Reynolds Inc.  ("DWR"),
a broker-dealer affiliate of InterCapital, the views of Trustees of the Fund and
others  regarding  economic  developments  and  interest  rate  trends,  and the
Investment Manager's own analysis of factors it deems relevant.

    The Fund is managed within InterCapital's Taxable Fixed-Income Group,  which
manages twenty-five funds and fund portfolios, with approximately $13 billion in
assets at April 30, 1995. Peter M. Avelar, Senior Vice President of InterCapital
and  a member of InterCapital's Taxable Fixed-Income Group, has been the primary
portfolio manager of the Fund since its inception. Mr. Avelar was Vice President
of InterCapital  from December,  1990-March, 1992  and First  Vice President  of
PaineWebber  Asset  Management  from  March, 1989-December,  1990.  He  has been
managing portfolios consisting  of fixed-income and  equity securities for  over
five years.

                                                                               9
<PAGE>
    Although  the Fund  does not engage  in substantial short-term  trading as a
means of achieving its  investment objective, it  may sell portfolio  securities
without regard to the length of time they have been held, in accordance with the
investment  policies described earlier.  Pursuant to an  order of the Securities
and Exchange Commission, the Fund  may effect principal transactions in  certain
money  market instruments  with DWR. In  addition, the Fund  may incur brokerage
commissions on transactions conducted  through DWR. Under normal  circumstances,
it  is not  anticipated that  the portfolio  trading will  result in  the Fund's
portfolio turnover rate  exceeding 200%  in any one  year. The  Fund will  incur
underwriting  discount costs  (on underwritten  securities) and  brokerage costs
commensurate with its portfolio turnover  rate. Short-term gains and losses  may
result  from  such  portfolio transactions.  See  "Dividends,  Distributions and
Taxes" for a discussion of the tax implications of the Fund's trading policy.

INVESTMENT RESTRICTIONS
- --------------------------------------------------------------------------------

The investment restrictions listed below  are among the restrictions which  have
been  adopted by the Fund as  fundamental policies. Under the Investment Company
Act of 1940, as  amended (the "Act"),  a fundamental policy  may not be  changed
without the vote of a majority of the outstanding voting securities of the Fund,
as  defined  in the  Act. For  purposes  of the  following limitations:  (i) all
percentage limitations apply immediately after a purchase or initial investment,
and (ii)  any subsequent  change  in any  applicable percentage  resulting  from
market  fluctuations or other  changes in total  or net assets  does not require
elimination of any security from the portfolio.

    The Fund may not:

        1. As to 75% of  its total assets, invest more  than 5% of the value  of
    its total assets in the securities of any one issuer (other than obligations
    issued  or  guaranteed  by the  United  States Government,  its  agencies or
    instrumentalities).

        2. Invest 25% or more of the value of its total assets in securities  of
    issuers  in any one industry. This restriction does not apply to obligations
    issued or guar-
    anteed by the United States Government, its agencies or instrumentalities.

        3. Invest more than 5% of the value of its total assets in securities of
    issuers having  a record,  together with  predecessors, of  less than  three
    years  of  continuous operation.  This restriction  shall  not apply  to any
    obligation issued  or  guaranteed  by  the  United  States  Government,  its
    agencies or instrumentalities.

        4.  As to 75% of its total assets,  purchase more than 10% of the voting
    securities of any issuer.

PURCHASE OF FUND SHARES
- --------------------------------------------------------------------------------

The Fund  offers its  shares  for sale  to the  public  on a  continuous  basis.
Pursuant   to  a  Distribution  Agreement  between  the  Fund  and  Dean  Witter
Distributors Inc. (the "Distributor"), an  affiliate of the Investment  Manager,
shares  of the Fund  are distributed by  the Distributor and  offered by DWR and
other brokers and dealers who have entered into agreements with the  Distributor
("Selected  Broker-Dealers"). The principal executive  office of the Distributor
is located at Two World Trade Center, New York, New York 10048.

    The minimum initial purchase is $1,000. Minimum subsequent purchases of $100
or more may  be made  by sending  a check, payable  to Dean  Witter High  Income
Securities, directly to Dean Witter Trust Company (the "Transfer Agent") at P.O.
Box  1040, Jersey City, NJ 07303 or by contacting an account executive of DWR or
other Selected Broker-Dealer. In the case of investments pursuant to  Systematic
Payroll  Deduction Plans (including  Individual Retirement Plans),  the Fund, in
its discretion, may  accept investments  without regard to  any minimum  amounts
which  would  otherwise be  required  if the  Fund  has reason  to  believe that
additional investments will increase the  investment in all accounts under  such
Plans  to at least $1,000. Certificates for  shares purchased will not be issued
unless a request is made  by the shareholder in  writing to the Transfer  Agent.
The  offering  price will  be  the net  asset  value per  share  next determined
following receipt of an order (see "Determination of Net Asset Value").

    Shares of  the  Fund are  sold  through the  Distributor  on a  normal  five
business  day (three business day beginning June 7, 1995) settlement basis; that
is, payment is due on the fifth business day (third business day beginning  June
7,  1995)  (settlement date)  after the  order is  placed with  the Distributor.
Shares of  the  Fund purchased  through  the  Distributor are  entitled  to  any
dividends declared beginning on the next business day following settlement date.
Since  DWR  and  other  Selected  Broker-Dealers  forward  investors'  funds  on
settlement date,  they will  benefit from  the  temporary use  of the  funds  if
payment  is made prior thereto. Shares  purchased through the Transfer Agent are
entitled to any dividends declared beginning on the next business day  following
receipt  of an order. As  noted above, orders placed  directly with the Transfer
Agent must be accompanied by  payment. While no sales  charge is imposed at  the
time  shares are purchased, a contingent deferred sales charge may be imposed at
the time of redemption (see "Redemptions and Repurchases"). Sales personnel  are
compensated  for selling  shares of the  Fund at the  time of their  sale by the
Distributor and/or Selected Broker-Dealer. In addition, some sales personnel  of
the  Selected Broker-Dealer will receive  various types of non-cash compensation
as special  sales  incentives, including  trips,  educational and/  or  business
seminars  and merchandise.  The Fund  and the  Distributor reserve  the right to
reject any purchase orders.

10
<PAGE>
ANALOGOUS DEAN WITTER FUNDS.  The  Distributor and the Investment Manager  serve
in  the same capacities for Dean Witter  High Yield Securities Inc., an open-end
investment company with investment objectives  and policies similar to those  of
the  Fund. Unlike the Fund, however, shares of Dean Witter High Yield Securities
Inc. are  offered to  the public  with a  sales charge  imposed at  the time  of
purchase,   rather  than  a  contingent  deferred  sales  charge  assessed  upon
redemption within  six years  of  purchase. These  two  Dean Witter  Funds  have
differing  fees and expenses, which will affect performance. Investors who would
like to receive a prospectus for  Dean Witter High Yield Securities Inc.  should
call  the telephone numbers listed on the front cover of this Prospectus, or may
call their account executive for additional information.

PLAN OF DISTRIBUTION

The Fund has adopted a Plan of Distribution pursuant to Rule 12b-1 under the Act
(the "Plan"), under which the Fund pays the Distributor a fee, which is  accrued
daily  and payable monthly, at an annual rate of 0.80% of the lesser of: (a) the
average daily aggregate gross sales of the Fund's shares since the inception  of
the   Fund  (not   including  reinvestments   of  dividends   or  capital  gains
distributions), less the average daily aggregate  net asset value of the  Fund's
shares  redeemed since  the Fund's  inception upon  which a  contingent deferred
sales charge has been  imposed or waived,  or (b) the  Fund's average daily  net
assets. This fee is treated by the Fund as an expense in the year it is accrued.
A  portion of the fee payable pursuant to the Plan, equal to 0.20% of the Fund's
average daily net assets, is characterized  as a service fee within the  meaning
of  NASD guidelines.  The service  fee is a  payment made  for personal services
and/or the maintenance of shareholder accounts.

    Amounts paid  under  the Plan  are  paid  to the  Distributor  for  services
provided   and  the  expenses  borne  by  the  Distributor  and  others  in  the
distribution of  the Fund's  shares, including  the payment  of commissions  for
sales  of the Fund's shares and incentive  compensation to and expenses of DWR's
account executives and others who engage in or support distribution of shares or
who service  shareholder accounts,  including overhead  and telephone  expenses;
printing  and distribution of  prospectuses and reports  used in connection with
the offering  of the  Fund's  shares to  other  than current  shareholders;  and
preparation,  printing  and  distribution of  sales  literature  and advertising
materials. In addition, the  Distributor may utilize fees  paid pursuant to  the
Plan  to compensate DWR and other  Selected Broker-Dealers for their opportunity
costs in advancing such amounts,  which compensation would be  in the form of  a
carrying charge on any unreimbursed expenses.

    For  the period ended  March 31, 1995,  the Fund accrued  payments under the
Plan amounting to $598,938, which amount is equal to 0.80% of the Fund's average
daily net  assets for  the period.  The  payments accrued  under the  Plan  were
calculated pursuant to clause (b) of the compensation formula under the Plan.

    At  any given time the expenses of distributing shares of the Fund may be in
excess of the total of (i) the payments  made by the Fund pursuant to the  Plan,
and  (ii) the  proceeds of contingent  deferred sales charges  paid by investors
upon the  redemption of  shares  (see "Redemptions  and  Repurchases--Contingent
Deferred  Sales Charge"). For example, if $1 million in expenses in distributing
shares of the Fund had been incurred and $750,000 had been received as described
in (i)  and  (ii)  above, the  excess  expense  would amount  to  $250,000.  The
Distributor  has  advised  the  Fund  that  the  excess  distribution  expenses,
including the carrying charge described above, totalled $4,127,736 at March  31,
1995, which was equal to 2.44% of the Fund's net assets on such date.

    Because  there  is no  requirement under  the Plan  that the  Distributor be
reimbursed for all  distribution expenses or  any requirement that  the Plan  be
continued  from year to year, such excess  amount, if any, does not constitute a
liability of the Fund. Although there is no legal obligation for the Fund to pay
expenses incurred in excess of payments made to the Distributor under the  Plan,
and  the proceeds  of contingent deferred  sales charges paid  by investors upon
redemption of shares, if for any reason the Plan is terminated the Trustees will
consider at that time the manner in which to treat such expenses. Any cumulative
expenses incurred, but not yet recovered through distribution fees or contingent
deferred sales charges, may or may not be recovered through future  distribution
fees or contingent deferred sales charges.

DETERMINATION OF NET ASSET VALUE

The net asset value per share of the Fund is determined once daily at 4:00 p.m.,
New  York time, on each day  that the New York Stock  Exchange is open by taking
the value of all assets of  the Fund, subtracting all its liabilities,  dividing
by  the number of shares outstanding and  adjusting to the nearest cent. The net
asset value per share will  not be determined on Good  Friday and on such  other
federal and non-federal holidays as are observed by the New York Stock Exchange.

    In  the calculation of the  Fund's net asset value:  (1) an equity portfolio
security listed or traded on  the New York or  American Stock Exchange or  other
domestic  or foreign stock exchange or quoted  by NASDAQ is valued at its latest
sale price on that exchange or quotation  service prior to the time when  assets
are  valued (if  there were  no sales that  day, the  security is  valued at the
latest bid  price)  (in cases  where  a security  is  traded on  more  than  one
exchange,  the  security is  valued on  the exchange  designated as  the primary
market by  the Trustees);  and  (2) all  other  portfolio securities  for  which
over-the-counter  market  quotations are  readily  available are  valued  at the
latest bid price. When  market quotations are  not readily available,  including
circumstances  under which it is determined  by the Investment Manager that sale
and bid prices are not reflective of a

                                                                              11
<PAGE>
security's market value, portfolio securities are valued at their fair value  as
determined  in good faith under procedures  established by and under the general
supervision of the Board of Trustees.

    Short-term debt securities with remaining  maturities of sixty days or  less
at  the  time of  purchase are  valued  at amortized  cost, unless  the Trustees
determine such does not reflect the securities' fair value, in which case  these
securities will be valued at their fair value as determined by the Trustees.

    Certain  of  the Fund's  portfolio securities  may be  valued by  an outside
pricing service approved by the Fund's Trustees. The pricing service utilizes  a
matrix  system  incorporating  security  quality,  maturity  and  coupon  as the
evaluation model parameters, and/or research evaluations by its staff, including
review of broker-dealer market price quotations, in determining what it believes
is the  fair  valuation of  the  portfolio  securities valued  by  such  pricing
service.

SHAREHOLDER SERVICES
- --------------------------------------------------------------------------------

AUTOMATIC  INVESTMENT OF DIVIDENDS AND DISTRIBUTIONS.   All income dividends and
capital gains distributions are automatically paid in full and fractional shares
of the Fund (or, if specified by the shareholder, any other open-end  investment
company  for which InterCapital serves as investment manager (collectively, with
the Fund, the "Dean Witter Funds")),  unless the shareholder requests that  they
be  paid in  cash. Shares  as acquired are  not subject  to the  imposition of a
contingent deferred sales  charge upon  their redemption  (see "Redemptions  and
Repurchases").

INVESTMENT  OF DISTRIBUTIONS RECEIVED  IN CASH.  Any  shareholder who receives a
cash payment representing a  dividend or capital  gains distribution may  invest
such  dividend or distribution at the net  asset value per share next determined
after receipt by the Transfer Agent, by  returning the check or the proceeds  to
the Transfer Agent within thirty days after the payment date. Shares so acquired
are  not subject to  the imposition of  a contingent deferred  sales charge upon
their redemption (see "Redemptions and Repurchases").

EASYINVEST-SM-.  Shareholders may subscribe to EasyInvest, an automatic purchase
plan which  provides  for any  amount  from $100  to  $5,000 to  be  transferred
automatically  from a checking or savings account, on a semi-monthly, monthly or
quarterly basis, to the Transfer Agent for investment in shares of the Fund.

SYSTEMATIC WITHDRAWAL  PLAN.   A  systematic  withdrawal plan  (the  "Withdrawal
Plan")  is available  for shareholders  who own or  purchase shares  of the Fund
having a minimum value of $10,000 based  upon the then current net asset  value.
The  Withdrawal Plan provides  for monthly or  quarterly (March, June, September
and December) checks in any  dollar amount, not less than  $25, or in any  whole
percentage  of  the  account balance,  on  an annualized  basis.  Any applicable
contingent deferred sales charge  will be imposed on  shares redeemed under  the
Withdrawal  Plan  (see "Redemptions  and Repurchases--Contingent  Deferred Sales
Charge"). Therefore, any shareholder participating  in the Withdrawal Plan  will
have  sufficient shares redeemed  from his or  her account so  that the proceeds
(net of any applicable contingent deferred sales charge) to the shareholder will
be the designated monthly or quarterly amount.

    Shareholders should  contact  their  DWR  or  other  Selected  Broker-Dealer
account executive or the Transfer Agent for further information about any of the
above services.

TAX-SHELTERED  RETIREMENT  PLANS.   Retirement plans  are  available for  use by
corporations, the self-employed,  Individual Retirement  Accounts and  Custodial
Accounts  under Section 403(b)(7) of the Internal Revenue Code. Adoption of such
plans should be on advice of legal counsel or tax adviser.

    For further information  regarding plan administration,  custodial fees  and
other   details,  investors   should  contact   their  DWR   or  other  Selected
Broker-Dealer account executive or the Transfer Agent.

EXCHANGE PRIVILEGE.  The Fund makes  available to its shareholders an  "Exchange
Privilege"  allowing the exchange of shares of the Fund for shares of other Dean
Witter Funds sold with  a contingent deferred sales  charge ("CDSC funds"),  and
for shares of Dean Witter Short-Term U.S. Treasury Trust, Dean Witter Short-Term
Bond Fund, Dean Witter Limited Term Municipal Trust, Dean Witter Balanced Growth
Fund,  Dean Witter  Balanced Income  Fund and five  Dean Witter  Funds which are
money  market  funds   (the  foregoing  ten   non-CDSC  funds  are   hereinafter
collectively  referred to as the "Exchange  Funds"). Exchanges may be made after
the shares  of  the Fund  acquired  by purchase  (not  by exchange  or  dividend
reinvestment)  have been held  for thirty days.  There is no  waiting period for
exchanges of shares acquired by exchange or dividend reinvestment.

    An exchange to another CDSC fund or to any Exchange Fund that is not a money
market fund is on the basis of the next calculated net asset value per share  of
each  fund after the  exchange order is  received. When exchanging  into a money
market fund from the Fund,  shares of the Fund are  redeemed out of the Fund  at
their  next calculated net  asset value and  the proceeds of  the redemption are
used to  purchase shares  of the  money market  fund at  their net  asset  value
determined  the following business day. Subsequent  exchanges between any of the
money market funds and any of the CDSC funds can be effected on the same  basis.
No  contingent deferred  sales charge  ("CDSC") is  imposed at  the time  of any
exchange, although any applicable CDSC will be imposed upon ultimate redemption.
Shares of the Fund which are exchanged for shares of

12
<PAGE>
another CDSC fund having a  higher CDSC schedule than that  of the Fund will  be
subject  to  the  CDSC schedule  of  the other  CDSC  fund, even  if  shares are
subsequently  re-exchanged  for  shares  of   the  Fund  prior  to   redemption.
Concomitantly,  shares of  the Fund acquired  in exchange for  shares of another
CDSC fund having a lower CDSC schedule than that of this Fund will be subject to
the  CDSC  schedule  of  this  Fund,  even  if  such  shares  are   subsequently
re-exchanged for shares of the CDSC fund originally purchased. During the period
of  time the shareholder remains in the  Exchange Fund (calculated from the last
day of the month in which the  Exchange Fund shares were acquired), the  holding
period (for the purpose of determining the rate of the CDSC) is frozen. If those
shares  are  subsequently reexchanged  for shares  of a  CDSC fund,  the holding
period previously frozen when  the first exchange was  made resumes on the  last
day  of the month in which shares of  a CDSC fund are reacquired. Thus, the CDSC
is based  upon the  time (calculated  as described  above) the  shareholder  was
invested  in a CDSC fund  (see "Redemptions and Repurchases--Contingent Deferred
Sales Charge"). However, in the case  of shares exchanged into an Exchange  Fund
on  or after April 23, 1990, upon a redemption of shares which results in a CDSC
being imposed, a credit (not to exceed the amount of the CDSC) will be given  in
an  amount equal  to the  Exchange Fund 12b-1  distribution fees  incurred on or
after that date  which are attributable  to those shares.  (Exchange Fund  12b-1
distribution fees are described in the prospectuses for those funds.)

    In  addition, shares of the  Fund may be acquired  in exchange for shares of
Dean Witter Funds sold  with a front-end sales  charge ("front-end sales  charge
funds"),  but shares  of the  Fund, however acquired,  may not  be exchanged for
shares of  front-end sales  charge funds.  Shares  of a  CDSC fund  acquired  in
exchange  for shares of a front-end sales charge fund (or in exchange for shares
of other Dean Witter  Funds for which  shares of a  front-end sales charge  fund
have been exchanged) are not subject to any CDSC upon their redemption.

    Purchases  and  exchanges should  be made  for  investment purposes  only. A
pattern of frequent  exchanges may  be deemed by  the Investment  Manager to  be
abusive and contrary to the best interests of the Fund's other shareholders and,
at  the Investment Manager's discretion, may be limited by the Fund's refusal to
accept additional purchases  and/or exchanges  from the  investor. Although  the
Fund  does not  have any  specific definition of  what constitutes  a pattern of
frequent exchanges,  and  will  consider all  relevant  factors  in  determining
whether  a particular situation is abusive and contrary to the best interests of
the Fund and its other shareholders, investors should be aware that the Fund and
each of the other Dean Witter Funds  may in their discretion limit or  otherwise
restrict  the number of  times this Exchange  Privilege may be  exercised by any
investor. Any such restriction will be made  by the Fund on a prospective  basis
only,  upon notice  to the  shareholder not later  than ten  days following such
shareholder's  most  recent  exchange.  Also,  the  Exchange  Privilege  may  be
terminated  or revised at  any time by the  Fund and/or any  of such Dean Witter
Funds for which shares of the Fund have been exchanged, upon such notice as  may
be  required by applicable regulatory  agencies. Shareholders maintaining margin
accounts with  DWR  or another  Selected  Broker-Dealer are  referred  to  their
account  executive  regarding restrictions  on exchange  of  shares of  the Fund
pledged in the margin account.

    The current prospectus for each  fund describes its investment  objective(s)
and policies, and shareholders should obtain one and examine it carefully before
investing.  Exchanges are subject to the  minimum investment requirement and any
other conditions imposed by each fund. In the case of any shareholder holding  a
share  certificate or  certificates, no  exchanges may  be made  until the share
certificate(s) have been  received by the  Transfer Agent and  deposited in  the
shareholder's  account.  An  exchange will  be  treated for  federal  income tax
purposes the  same  as  a repurchase  of  redemption  of shares,  on  which  the
shareholder  may realize a capital gain or  loss. However, the ability to deduct
capital losses on an  exchange may be  limited in situations  where there is  an
exchange  of  shares within  ninety  days after  the  shares are  purchased. The
Exchange Privilege is only available in states where an exchange may legally  be
made.

    If DWR or another Selected Broker-Dealer is the current dealer of record and
its  account  numbers  are part  of  the account  information,  shareholders may
initiate an exchange of shares of the Fund for shares of any of the Dean  Witter
Funds  (for which the Exchange Privilege is available) pursuant to this Exchange
Privilege  by  contacting  their   account  executive  (no  Exchange   Privilege
Authorization  Form is required). Other shareholders (and those shareholders who
are clients  of  DWR or  other  Selected Broker-Dealers  but  who wish  to  make
exchanges  directly by writing or telephoning  the Transfer Agent) must complete
and forward  to the  Transfer Agent  an Exchange  Privilege Authorization  Form,
copies  of  which  may be  obtained  from  the Transfer  Agent,  to  initiate an
exchange. If the Authorization Form is used, exchanges may be made in writing or
by contacting the Transfer Agent at (800) 526-3143 (toll-free).

    The  Fund  will  employ  reasonable  procedures  to  confirm  that  exchange
instructions  communicated over the  telephone are genuine.  Such procedures may
include requiring various forms of personal identification such as name, mailing
address, social security  or other tax  identification number and  DWR or  other
Selected  Broker-Dealer account number (if any). Telephone instructions may also
be recorded. If such procedures are not employed, the Fund may be liable for any
losses due to unauthorized or fraudulent instructions.

    Telephone exchange instructions will be accepted if received by the Transfer
Agent between 9:00 a.m. and  4:00 p.m., New York time,  on any day the New  York
Stock  Exchange is  open. Any  shareholder wishing to  make an  exchange who has
previously filed an Exchange Privilege

                                                                              13
<PAGE>
Authorization Form  and who  is unable  to reach  the Fund  by telephone  should
contact  his or  her DWR or  other Selected Broker-Dealer  account executive, if
appropriate, or make a written  exchange request. Shareholders are advised  that
during  periods of drastic economic  or market changes, it  is possible that the
telephone exchange procedures may be
difficult to implement, although this has not been the experience with the  Dean
Witter Funds in the past.

    Shareholders  should  contact  their  DWR  or  other  Selected Broker-Dealer
account executive  or  the Transfer  Agent  for further  information  about  the
Exchange Privilege.

REDEMPTIONS AND REPURCHASES
- --------------------------------------------------------------------------------

REDEMPTION.   Shares of the Fund can be redeemed for cash at any time at the net
asset value per share next determined; however, such redemption proceeds may  be
reduced  by the amount of any  applicable contingent deferred sales charges (see
below).  If  shares  are  held  in  a  shareholder's  account  without  a  share
certificate,  a written request  for redemption to the  Fund's Transfer Agent at
P.O. Box 983, Jersey City, NJ 07303 is required. If certificates are held by the
shareholder(s), the shares may be redeemed by surrendering the certificates with
a written request for redemption, along with any additional information required
by the Transfer Agent.

CONTINGENT DEFERRED SALES CHARGE.   Shares of the Fund  which are held for  five
years or more after purchase (calculated from the last day of the month in which
the  shares were purchased) will  not be subject to  any charge upon redemption.
Shares redeemed sooner than five years  after purchase may, however, be  subject
to  a charge upon redemption. This charge is called a "contingent deferred sales
charge" ("CDSC"), and it  will be a  percentage of the  dollar amount of  shares
redeemed  and will be assessed  on an amount equal to  the lesser of the current
market value  or  the cost  of  the shares  being  redeemed. The  size  of  this
percentage  will depend upon how long the shares have been held, as set forth in
the table below:

<TABLE>
<CAPTION>
                                          CONTINGENT DEFERRED
               YEAR SINCE                     SALES CHARGE
                PURCHASE                   AS A PERCENTAGE OF
              PAYMENT MADE                  AMOUNT REDEEMED
- ----------------------------------------  --------------------
<S>                                       <C>
First...................................          4.0%
Second..................................          3.0%
Third...................................          2.0%
Fourth..................................          2.0%
Fifth...................................          1.0%
Sixth and thereafter....................          None
</TABLE>

    A CDSC will not be imposed on:  (i) any amount which represents an  increase
in  value of  shares purchased within  the five years  preceding the redemption;
(ii) the current net asset value of shares purchased more than five years  prior
to  the redemption; and  (iii) the current  net asset value  of shares purchased
through reinvestment of  dividends or  distributions and/or  shares acquired  in
exchange  for shares of Dean Witter Funds  sold with a front-end sales charge or
of other Dean Witter  Funds acquired in exchange  for such shares. Moreover,  in
determining  whether  a  CDSC is  applicable  it  will be  assumed  that amounts
described in (i), (ii) and (iii) above (in that order) are redeemed first.

    In addition, the CDSC, if otherwise  applicable, will be waived in the  case
of:  (i) redemptions of  shares held at  the time a  shareholder dies or becomes
disabled, only  if the  shares  are (a)  registered either  in  the name  of  an
individual  shareholder (not a trust),  or in the names  of such shareholder and
his or her spouse as joint tenants with right of survivorship, or (b) held in  a
qualified  corporate  or  self-employed retirement  plan,  Individual Retirement
Account or Custodial  Account under  Section 403(b)(7) of  the Internal  Revenue
Code,  provided in either case that the  redemption is requested within one year
of the death  or initial determination  of disability, and  (ii) redemptions  in
connection  with the  following retirement  plan distributions:  (a) lump-sum or
other distributions from a qualified corporate or self-employed retirement  plan
following  retirement (or in the case of a "key employee" of a "top heavy" plan,
following attainment  of  age  59  1/2; (b)  distributions  from  an  Individual
Retirement  Account or Custodial Account under Section 403(b)(7) of the Internal
Revenue Code following attainment of age 59  1/2); and (c) a tax-free return  of
an excess contribution to an IRA. For the purpose of determining disability, the
Distributor  utilizes the definition of disability contained in Section 72(m)(7)
of the  Internal Revenue  Code, which  relates  to the  inability to  engage  in
gainful  employment. All waivers  will be granted only  following receipt by the
Distributor of confirmation of the shareholder's entitlement.

REPURCHASE.  DWR and other Selected Broker-Dealers are authorized to  repurchase
shares  represented by a  share certificate which  is delivered to  any of their
offices. Shares held in a shareholder's account without a share certificate  may
also be repurchased by DWR and other Selected Broker-Dealers upon the telephonic
or telegraphic request of the shareholder. The repurchase price is the net asset
value  next computed (see "Purchase of Fund Shares") after such repurchase order
is received by DWR  or other Selected Broker-Dealer,  reduced by any  applicable
CDSC.

    The  CDSC, if  any, will  be the only  fee imposed  by either  the Fund, the
Distributor or DWR or other Selected  Broker-Dealer. The offer by DWR and  other
Selected  Broker-Dealers to repurchase shares may be suspended without notice by
the Distributor at any time. In that event, shareholders may redeem their shares
through the Fund's Transfer Agent as set forth above under "Redemption."

PAYMENT FOR SHARES REDEEMED  OR REPURCHASED.  Payment  for shares presented  for
repurchase  or redemption will be made by  check within seven days after receipt
by the Transfer Agent of the  certificate and/or written request in good  order.
Such payment may be postponed or the right of redemption suspended under unusual
circumstances.  If the  shares to  be redeemed  have recently  been purchased by

14
<PAGE>
check, payment of the  redemption proceeds may be  delayed for the minimum  time
needed  to verify that the check used  for investment has been honored (not more
than fifteen days from the time of receipt of the check by the Transfer  Agent).
Shareholders   maintaining  margin   accounts  with  DWR   or  another  Selected
Broker-Dealer are referred to their account executive regarding restrictions  on
redemption of shares of the Fund pledged in the margin account.

REINSTATEMENT  PRIVILEGE.  A shareholder who has  had his or her shares redeemed
or repurchased and  has not  previously exercised  this reinstatement  privilege
may,  within  thirty  days  after  the date  of  the  redemption  or repurchase,
reinstate any portion or all of the proceeds of such redemption or repurchase in
shares  of  the  Fund  at  their  net  asset  value  next  determined  after   a
reinstatement  request, together with the proceeds,  is received by the Transfer
Agent and receive a pro-rata  credit for any CDSC  paid in connection with  such
redemption or repurchase.

INVOLUNTARY  REDEMPTION.  The Fund reserves the  right to redeem, on sixty days'
notice and at net asset value, the shares of any shareholder (other than  shares
held  in an  Individual Retirement  Account or  custodial account  under Section
403(b)(7) of the Internal Revenue Code)  whose shares due to redemptions by  the
shareholder have a value of less than $100 or such lesser amount as may be fixed
by  the Trustees.  However, before  the Fund redeems  such shares  and sends the
proceeds to the shareholder,  it will notify the  shareholder that the value  of
the  shares  is less  than $100  and  allow him  or her  sixty  days to  make an
additional investment in an amount which will  increase the value of his or  her
account  to $100  or more before  the redemption  is processed. No  CDSC will be
imposed on any involuntary redemption.

DIVIDENDS, DISTRIBUTIONS AND TAXES
- --------------------------------------------------------------------------------

DIVIDENDS AND DISTRIBUTIONS.  The Fund intends to declare and pay monthly income
dividends and to distribute net short-term  and net long-term capital gains,  if
any,  at  least once  each  year. The  Fund  may, however,  determine  either to
distribute or to retain all or part  of any long-term capital gains in any  year
for reinvestment.

    All  dividends and  capital gains distributions  will be  paid in additional
Fund  shares  (without   sales  charge)  and   automatically  credited  to   the
shareholder's  account  without  issuance  of  a  share  certificate  unless the
shareholder requests in  writing that  all dividends be  paid in  cash and  such
request is received by the close of business on the day prior to the record date
for  such  distributions.  (See "Shareholder  Services--Automatic  Investment of
Dividends and Distributions".)

TAXES.  Because the Fund intends to distribute all of its net investment  income
and  net  capital gains  to shareholders  and otherwise  qualify as  a regulated
investment company under Subchapter  M of the Internal  Revenue Code, it is  not
expected  that the Fund will  be required to pay any  Federal income tax on such
income and capital gains.

    With respect to the  Fund's investments in  zero coupon and  payment-in-kind
bonds,  the  Fund accrues  income prior  to  any actual  cash payments  by their
issuers. In order to comply with Subchapter  M of the Internal Revenue Code  and
be able to forego payment of Federal income tax on its income and capital gains,
the  Fund must  distribute all  of its  net investment  income, including income
accrued from zero  coupon and payment-in-kind  bonds. As such,  the Fund may  be
required  to dispose of  some of its  portfolio securities under disadvantageous
circumstances to generate the cash required for distribution.

    Shareholders will  normally  have  to  pay Federal  income  taxes,  and  any
applicable  state and/or local income taxes,  on the dividends and distributions
they receive from the Fund. Such dividends and distributions, to the extent they
are derived from  net investment  income or  net short-term  capital gains,  are
taxable to the shareholder as ordinary dividend income regardless of whether the
shareholder  receives such  distributions in additional  shares or  in cash. Any
dividends declared in the last calendar  quarter of any year to shareholders  of
record  for that period which  are paid in the  following calendar year prior to
February 1 will  be deemed  received by the  shareholder in  the prior  calendar
year.  Since the Fund's income is expected to be derived primarily from interest
rather than  dividends, only  a small  portion, if  any, of  such dividends  and
distributions  is expected  to be  eligible for  the Federal  dividends received
deduction available to corporations.

    Distributions of  net  long-term  capital  gains, if  any,  are  taxable  to
shareholders as long-term capital gains regardless of how long a shareholder has
held the Fund's shares and regardless of whether the distribution is received in
additional  shares or in cash. Capital  gains distributions are not eligible for
the dividends received deduction. Capital gains may be generated by transactions
in options and futures contracts engaged in by the Fund.

    The Fund may at times  make payments from sources  other than income or  net
capital gains. Payments from such sources will, in effect, represent a return of
a  portion of each shareholder's investment. All, or a portion, of such payments
will not be taxable to shareholders.

    After the end of the calendar year, shareholders will receive a statement of
their dividends  and capital  gains distributions  for tax  purposes,  including
information as to the portion taxable as ordinary income and the portion taxable
as capital gains.

    To  avoid being subject to  a 31% Federal backup  withholding tax on taxable
dividends, capital  gains  distributions and  the  proceeds of  redemptions  and
repurchases, shareholders' taxpayer identification numbers must be furnished and
certified as to their accuracy.

                                                                              15
<PAGE>
    Shareholders  should consult their tax advisers regarding specific questions
as to state or local taxes and as to the applicability of the foregoing to their
current federal tax situation.

PERFORMANCE INFORMATION
- --------------------------------------------------------------------------------

From time to time the  Fund may quote its "yield"  and/or its "total return"  in
advertisements  and sales literature. Both the yield and the total return of the
Fund are based on  historical earnings and are  not intended to indicate  future
performance.  The  yield of  the Fund  is  computed by  dividing the  Fund's net
investment income over a  30-day period by an  average value (using the  average
number of shares entitled to receive dividends and the net asset value per share
at  the  end  of  the  period), all  in  accordance  with  applicable regulatory
requirements. Such amount is compounded for six months and then annualized for a
twelve-month period to derive the Fund's yield.

    The "average annual total return" of the Fund refers to a figure  reflecting
the  average annualized  percentage increase  (or decrease)  in the  value of an
initial investment in the Fund of $1,000 over one year and the life of the Fund.
Average annual  total  return  reflects  all income  earned  by  the  Fund,  any
appreciation  or depreciation of the Fund's assets, all expenses incurred by the
Fund and all sales charges incurred  by shareholders, for the stated period.  It
also assumes reinvestment of all dividends and distributions paid by the Fund.

    In  addition to the foregoing, the Fund  may advertise its total return over
different periods of time  by means of aggregate,  average, and year-by-year  or
other  types of total return figures. The  Fund may also advertise the growth of
hypothetical investments of $10,000, $50,000 and $100,000 in shares of the Fund.
Such calculations  may  or may  not  reflect  the deduction  of  the  contingent
deferred  sales charge which, if reflected, would reduce the performance quoted.
The Fund  from time  to time  may  also advertise  its performance  relative  to
certain  performance rankings and indexes compiled by independent organizations,
such as mutual fund performance rankings of Lipper Analytical Services, Inc.

ADDITIONAL INFORMATION
- --------------------------------------------------------------------------------

VOTING RIGHTS.  All shares of beneficial  interest of the Fund are of $0.01  par
value and are equal as to earnings, assets and voting privileges.

    The  Fund is  not required  to hold Annual  Meetings of  Shareholders and in
ordinary circumstances  the Fund  does not  intend to  hold such  meetings.  The
Trustees  may call  Special Meetings of  Shareholders for  action by shareholder
vote as may be required  by the Act or the  Declaration of Trust. Under  certain
circumstances  the Trustees may be  removed by action of  the Trustees or by the
shareholders.

    Under Massachusetts law, shareholders of a business trust may, under certain
circumstances, be  held personally  liable as  partners for  obligations of  the
Fund.  However,  the  Declaration of  Trust  contains an  express  disclaimer of
shareholder liability for acts  or obligations of the  Fund, requires that  Fund
obligations  include  such  disclaimer,  and  provides  for  indemnification and
reimbursement of expenses out  of the Fund's property  for any shareholder  held
personally  liable  for  the  obligations  of the  Fund.  Thus,  the  risk  of a
shareholder incurring  financial loss  on account  of shareholder  liability  is
limited  to circumstances in which  the Fund itself would  be unable to meet its
obligations. Given the above limitations on shareholder personal liability,  and
the  nature of  the Fund's  assets and operations,  the possibility  of the Fund
being unable  to  meet  its  obligations  is  remote  and,  in  the  opinion  of
Massachusetts  counsel to  the Fund, the  risk to Fund  shareholders of personal
liability is remote.

CODE OF ETHICS.  Directors, officers and employees of InterCapital, Dean  Witter
Services Company Inc. and the Distributor are subject to a strict Code of Ethics
adopted  by those companies. The  Code of Ethics is  intended to ensure that the
interests of shareholders  and other clients  are placed ahead  of any  personal
interest,  that no undue personal benefit is obtained from a person's employment
activities and that actual and potential  conflicts of interest are avoided.  To
achieve  these goals and comply with regulatory requirements, the Code of Ethics
requires, among other things, that personal securities transactions by employees
of the companies be subject to an  advance clearance process to monitor that  no
Dean  Witter Fund is engaged at the same time  in a purchase or sale of the same
security. The  Code of  Ethics bans  the purchase  of securities  in an  initial
public  offering, and also prohibits engaging in futures and option transactions
and profiting on short-term trading (that is, a purchase within sixty days of  a
sale  or a  sale within sixty  days of a  purchase) of a  security. In addition,
investment personnel may  not purchase  or sell  a security  for their  personal
account  within thirty days before  or after any transaction  in any Dean Witter
Fund managed  by them.  Any violations  of the  Code of  Ethics are  subject  to
sanctions,  including  reprimand,  demotion  or  suspension  or  termination  of
employment. The Code  of Ethics  comports with regulatory  requirements and  the
recommendations  in  the  recent  report  by  the  Investment  Company Institute
Advisory Group on Personal Investing.

SHAREHOLDER INQUIRIES.  All inquiries regarding  the Fund should be directed  to
the  Fund at the  telephone numbers or address  set forth on  the front cover of
this Prospectus.

16
<PAGE>
APPENDIX -- RATINGS OF INVESTMENTS
- --------------------------------------------------------------------------------

MOODY'S INVESTORS SERVICE INC. ("MOODY'S")

                                  BOND RATINGS

<TABLE>
<S>        <C>
Aaa        Bonds  which are rated Aaa are judged to be  of the best quality. They carry the smallest degree
           of investment risk and are generally referred to as "gilt edge." Interest payments are protected
           by a large  or by  an exceptionally stable  margin and  principal is secure.  While the  various
           protective elements are likely to change, such changes as can be visualized are most unlikely to
           impair the fundamentally strong position of such issues.
Aa         Bonds  which are rated Aa are  judged to be of high quality  by all standards. Together with the
           Aaa group they comprise what are generally known as high grade bonds. They are rated lower  than
           the  best bonds  because margins  of protection  may not  be as  large as  in Aaa  securities or
           fluctuation of protective elements may  be of greater amplitude or  there may be other  elements
           present which make the long-term risks appear somewhat larger than in Aaa securities.
A          Bonds which are rated A possess many favorable investment attributes and are to be considered as
           upper medium grade obligations. Factors giving security to principal and interest are considered
           adequate,  but elements may be present which  suggest a susceptibility to impairment sometime in
           the future.
Baa        Bonds which are rated  Baa are considered  as medium grade obligations;  i.e., they are  neither
           highly  protected nor poorly  secured. Interest payments and  principal security appear adequate
           for the present  but certain protective  elements may  be lacking or  may be  characteristically
           unreliable over any great length of time. Such bonds lack outstanding investment characteristics
           and in fact have speculative characteristics as well.
           Bonds rated Aaa, Aa, A and Baa are considered investment grade bonds.
Ba         Bonds  which  are rated  Ba are  judged to  have  speculative elements;  their future  cannot be
           considered as well assured. Often the protection of interest and principal payments may be  very
           moderate,  and therefore not  well safeguarded during both  good and bad  times over the future.
           Uncertainty of position characterizes bonds in this class.
B          Bonds which are rated  B generally lack characteristics  of desirable investments. Assurance  of
           interest  and principal payments or of maintenance of  other terms of the contract over any long
           period of time may be small.
Caa        Bonds which are rated Caa are  of poor standing. Such issues may  be in default or there may  be
           present elements of danger with respect to principal or interest.
Ca         Bonds which are rated Ca present obligations which are speculative in a high degree. Such issues
           are often in default or have other marked shortcomings.
C          Bonds which are rated C are the lowest rated class of bonds, and issues so rated can be regarded
           as having extremely poor prospects of ever attaining any real investment standing.
</TABLE>

CONDITIONAL  RATING:   Municipal bonds for  which the security  depends upon the
completion  of  some  act  or  the  fulfillment  of  some  condition  are  rated
conditionally.  These  are  bonds  secured by  (a)  earnings  of  projects under
construction, (b) earnings of projects  unseasoned in operation experience,  (c)
rentals which begin when facilities are completed, or (d) payments to which some
other  limiting condition attaches. Parenthetical rating denotes probable credit
stature upon completion of construction or elimination of basis of condition.

RATING REFINEMENTS:  Moody's may apply numerical  modifiers, 1, 2 and 3 in  each
generic  rating classification from Aa through  B in its corporate and municipal
bond rating system.  The modifier  1 indicates that  the security  ranks in  the
higher  end of its generic rating category; the modifier 2 indicates a mid-range
ranking; and a modifier 3 indicates that the issue ranks in the lower end of its
generic rating category.

                            COMMERCIAL PAPER RATINGS

    Moody's Commercial  Paper  ratings are  opinions  of the  ability  to  repay
punctually  promissory obligations not having an  original maturity in excess of
nine months. Moody's employs the following three designations, all judged to  be
investment  grade, to indicate the relative repayment capacity of rated issuers:
Prime-1, Prime-2, Prime-3.

    Issuers rated Prime-1 have a  superior capacity for repayment of  short-term
promissory  obligations.  Issuers  rated  Prime-2  have  a  strong  capacity for
repayment of short-term promissory obligations;  and Issuers rated Prime-3  have
an  acceptable  capacity  for repayment  of  short-term  promissory obligations.
Issuers rated Not Prime do not fall within any of the Prime rating categories.

                                                                              17
<PAGE>
STANDARD & POOR'S CORPORATION ("STANDARD & POOR'S")

                                  BOND RATINGS

    A  Standard  &  Poor's   bond  rating  is  a   current  assessment  of   the
creditworthiness  of  an obligor  with respect  to  a specific  obligation. This
assessment may take into consideration obligors such as guarantors, insurers, or
lessees.

    The ratings are  based on  current information  furnished by  the issuer  or
obtained  by Standard  & Poor's  from other  sources it  considers reliable. The
ratings are  based, in  varying degrees,  on the  following considerations:  (1)
likelihood  of default-capacity and willingness of  the obligor as to the timely
payment of interest and repayment of  principal in accordance with the terms  of
the  obligation;  (2)  nature  of  and provisions  of  the  obligation;  and (3)
protection afforded by, and relative position of, the obligation in the event of
bankruptcy, reorganization or other arrangement under the laws of bankruptcy and
other laws affecting creditors' rights.

    Standard & Poor's does  not perform an audit  in connection with any  rating
and  may, on occasion, rely on  unaudited financial information. The ratings may
be changed, suspended or withdrawn as a result of changes in, or  unavailability
of, such information, or for other reasons.

<TABLE>
<S>        <C>
AAA        Debt  rated AAA has the highest rating assigned  by Standard & Poor's. Capacity to pay
           interest and repay principal is extremely strong.
AA         Debt rated AA  has a  very strong  capacity to pay  interest and  repay principal  and
           differs from the highest-rated issues only in small degree.
A          Debt  rated A has a strong capacity to  pay interest and repay principal although they
           are somewhat more susceptible to the  adverse effects of changes in circumstances  and
           economic conditions than debt in higher-rated categories.
BBB        Debt  rated BBB is regarded  as having an adequate capacity  to pay interest and repay
           principal. Whereas  it  normally  exhibits  adequate  protection  parameters,  adverse
           economic  conditions or changing circumstances  are more likely to  lead to a weakened
           capacity to pay interest and repay principal  for debt in this category than for  debt
           in higher-rated categories.
           Bonds rated AAA, AA, A and BBB are considered investment grade bonds.
BB         Debt rated BB has less near-term vulnerability to default than other speculative grade
           debt.  However, it faces major ongoing  uncertainties or exposure to adverse business,
           financial or  economic conditions  which could  lead to  inadequate capacity  to  meet
           timely interest and principal payment.
B          Debt  rated B has a greater vulnerability to default but presently has the capacity to
           meet interest  payments  and  principal repayments.  Adverse  business,  financial  or
           economic  conditions would likely  impair capacity or willingness  to pay interest and
           repay principal.
CCC        Debt rated CCC has a current  identifiable vulnerability to default, and is  dependent
           upon  favorable business, financial and economic conditions to meet timely payments of
           interest and repayments of principal. In  the event of adverse business, financial  or
           economic  conditions, it is not likely to have  the capacity to pay interest and repay
           principal.
CC         The rating  CC is  typically applied  to debt  subordinated to  senior debt  which  is
           assigned an actual or implied CCC rating.
C          The  rating  C is  typically  applied to  debt subordinated  to  senior debt  which is
           assigned an actual or implied CCC- debt rating.
CI         The rating CI is reserved for income bonds on which no interest is being paid.
D          Debt rated "D" is in  payment default. The "D" rating  category is used when  interest
           payments  or principal payments  are not made on  the date due  even if the applicable
           grace period has  not expired, unless  S&P believes  that such payments  will be  made
           during  such grace  period. The  "D" rating  also will  be used  upon the  filing of a
           bankruptcy petition if debt service payments are jeopardized.
NR         Indicates that no rating has been requested, that there is insufficient information on
           which to base a rating or  that Standard & Poor's does  not rate a particular type  of
           obligation as a matter of policy.
           Bonds  rated BB,  B, CCC, CC  and C  are regarded as  having predominantly speculative
           characteristics with  respect to  capacity to  pay interest  and repay  principal.  BB
           indicates  the least degree  of speculation and  C the highest  degree of speculation.
           While such debt will  likely have some quality  and protective characteristics,  these
           are outweighed by large uncertainties or major risk exposures to adverse conditions.
</TABLE>

18
<PAGE>
<TABLE>
<S>        <C>
           Plus (+) or minus (-): The ratings from AA to CCC may be modified by the addition of a
           plus or minus sign to show relative standing within the major ratings categories.
           In  the case of municipal bonds, the foregoing ratings are sometimes followed by a "p"
           which indicates  that the  rating is  provisional. A  provisional rating  assumes  the
           successful  completion of  the project  being financed  by the  bonds being  rated and
           indicates that payment of debt service  requirements is largely or entirely  dependent
           upon  the successful and timely completion of the project. This rating, however, while
           addressing credit quality subsequent to completion of the project, makes no comment on
           the likelihood or risk of default upon failure of such completion.
</TABLE>

                            COMMERCIAL PAPER RATINGS

    Standard and Poor's commercial paper rating  is a current assessment of  the
likelihood of timely payment of debt having an original maturity of no more than
365  days. The commercial  paper rating is  not a recommendation  to purchase or
sell a security. The ratings are based upon current information furnished by the
issuer or obtained by S&P from other sources it considers reliable. The  ratings
may  be  changed,  suspended,  or  withdrawn  as  a  result  of  changes  in  or
unavailability of such  information. Ratings are  graded into group  categories,
ranging  from "A"  for the  highest quality obligations  to "D"  for the lowest.
Ratings are  applicable to  both taxable  and tax-exempt  commercial paper.  The
categories are as follows:

    Issues  assigned A ratings are regarded  as having the greatest capacity for
timely payment. Issues in this category are further refined with the designation
1, 2 and 3 to indicate the relative degree of safety.

<TABLE>
<S>        <C>
    A-1    indicates that the degree of safety regarding timely payment is very strong.
    A-2    indicates capacity for timely  payment on issues with  this designation is strong.  However,
           the relative degree of safety is not as overwhelming as for issues designated "A-1".
    A-3    indicates  a satisfactory capacity for timely payment. Obligations carrying this designation
           are, however, somewhat more  vulnerable to the adverse  effects of changes in  circumstances
           than obligations carrying the higher designations.
</TABLE>

                                                                              19
<PAGE>

DEAN WITTER
HIGH INCOME SECURITIES
TWO WORLD TRADE CENTER
NEW YORK, NEW YORK 10048

TRUSTEES
Jack F. Bennett
Michael Bozic
Charles A. Fiumefreddo
Edwin J. Garn
John R. Haire
Dr. Manuel H. Johnson
Paul Kolton
Michael E. Nugent
Philip J. Purcell
John L. Schroeder

OFFICERS
Charles A. Fiumefreddo
Chairman and Chief Executive
Officer
Sheldon Curtis
Vice President, Secretary and
General Counsel
Peter M. Avelar
Vice President
Thomas F. Caloia
Treasurer

CUSTODIAN
The Bank of New York
90 Washington Street
New York, New York 10286

TRANSFER AGENT AND
DIVIDEND DISBURSING AGENT
Dean Witter Trust Company
Harborside Financial Center,
Plaza Two
Jersey City, New Jersey 07311

INDEPENDENT ACCOUNTANTS
Price Waterhouse LLP
1177 Avenue of the Americas
New York, New York 10036

INVESTMENT MANAGER
Dean Witter InterCapital Inc.


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