SUPPLEMENT TO THE CURRENTLY EFFECTIVE PROSPECTUS

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

                                     CLASS S
                            DWS Strategic Income Fund

The following information supplements disclosure in "The Fund's Main Investment
Strategy" section of the fund's Class S prospectus:

Other Investments. The fund may invest in affiliated mutual funds. The fund may
invest up to 5% of net assets in shares of DWS Floating Rate Plus Fund, which
invests primarily in adjustable rate loans that have a senior right to payment
("Senior Loans"). By investing in DWS Floating Rate Plus Fund, the fund may
achieve greater diversification within the Senior Loan asset class (through
indirect exposure to more Senior Loan securities of varying sizes and risks)
than it could gain buying Senior Loan securities directly.




                                                                     [Logo]DWS
                                                                       SCUDDER
October 16, 2007                                           Deutsche Bank Group
PS391-3600

<PAGE>


The following information replaces disclosure in "The Fund's Performance
History" section of the fund's Class S prospectus:

Average Annual Total Returns (%) as of 12/31/2006


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                                                                        Since
                                                         1 Year       Inception*
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Class S
--------------------------------------------------------------------------------
  Return before Taxes                                     9.08          5.65
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  Return after Taxes on Distributions                     6.53          2.89
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  Return after Taxes on Distributions and Sale of         5.83          3.19
  Fund Shares
--------------------------------------------------------------------------------
Lehman Brothers Government/Credit Bond Index              3.78          2.83
(reflects no deductions for fees, expenses or taxes)
--------------------------------------------------------------------------------
Blended Index (reflects no deductions for fees,           7.28          5.96
expenses or taxes)
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* Inception date for Class S was February 1, 2005.

** Index comparison begins on January 31, 2005.

The Lehman Brothers US Government/Credit Index is an unmanaged index comprising
intermediate- and long-term government and investment-grade corporate debt
securities.

The Blended Index consists of the Credit Suisse High Yield Index (35%), Lehman
Brothers Government Bond Index (35%), J.P. Morgan Emerging Markets Bond Index
Global Diversified (15%) and Citigroup Non US Hedged WBGI (15%). The advisor
believes this blended benchmark, which is a secondary benchmark, more accurately
reflects typical fund asset allocations and represents the overall investment
process.
--------------------------------------------------------------------------------

Current performance may be higher or lower than the performance data quoted
above. For more recent performance information, call your financial advisor or
(800) 621-1048 or visit our Web site at www.dws-scudder.com.



October 16, 2007
PS391-3600
                                       2
<PAGE>


The following information replaces disclosure in "How Much Investors Pay"
section of the fund's Class S prospectus:

The table below describes the fees and expenses that you may pay if you buy and
hold fund shares.

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Fee Table                                                               Class S
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Shareholder Fees, paid directly from your investment
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Redemption/Exchange Fee on shares owned less than 15 days                2.00%
(as % of redemption proceeds)(1)
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Annual Operating Expenses, deducted from fund assets
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Management Fee(2)                                                       0.57%
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Distribution/Service (12b-1) Fee                                        0.00
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Other Expenses(3)                                                       0.38
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Acquired Funds (Underlying Funds) Fees and Expenses(4)                  0.05
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Total Annual Operating Expenses                                         1.00
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Less Fee Waiver/Reimbursement(5)                                        0.08
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Net Annual Operating Expenses                                           0.92
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(1)  This fee is charged on applicable redemptions or exchanges. Please see
     "Policies You Should Know About -- Policies about transactions" for further
     information.

(2)  To the extent the fund invests in other mutual funds advised by the Advisor
     and its affiliates ("affiliated mutual funds"), the Advisor has agreed not
     to impose its advisory fees on assets invested in such other affiliated
     mutual funds. In the case of an investment in DWS Floating Rate Plus Fund,
     the Advisor has also agreed to apply a management fee credit to the fund
     equal to the difference between DWS Floating Rate Plus Fund's management
     fee and the fund's management fee, if positive, as applied to the amount of
     assets invested by the fund in DWS Floating Rate Plus Fund.

(3)  Restated on an annualized basis to reflect approved fee changes which took
     effect on February 1, 2007.

(4)  In addition to the Total Annual Operating Expenses which the fund bears
     directly, the fund's shareholders indirectly bear the expenses of the
     underlying funds in which the fund invests. The fund's estimated indirect
     expenses from investing in the underlying funds, based on its expected
     allocations and underlying funds, is as shown in the table. An underlying
     fund's expense ratio reflects contractual expense limitations and/or
     reimbursements where applicable, based on such underlying fund's most
     recent prospectus.

(5)  Effective October 1, 2007 through September 30, 2008, the Advisor has
     contractually agreed to waive all or a portion of its management fee and
     reimburse or pay operating expenses of the fund to the extent necessary to
     maintain the fund's total operating expenses at 0.87% for Class S shares
     excluding certain expenses such as extraordinary expenses, taxes,
     brokerage, interest, and indirect expenses of underlying DWS funds.

October 16, 2007
PS391-3600
                                       3
<PAGE>


Based on the costs above (including one year of capped expenses), this example
helps you compare this fund's expenses to those of other mutual funds. This
example assumes the expenses above remain the same and that you invested
$10,000, earned 5% annual returns and reinvested all dividends and
distributions. This is only an example; actual expenses will be different.

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Example              1 Year          3 Years         5 Years         10 Years
--------------------------------------------------------------------------------
Class S                $94             $310            $545          $1,217
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               Please Retain This Supplement for Future Reference.




October 16, 2007
PS391-3600
                                       4