SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
              ----------------------------------------------------

                                  SCHEDULE 13D

                               (Amendment No. 21)

                    Under the Securities Exchange Act of 1934


                        SPELLING ENTERTAINMENT GROUP INC.
                                (Name of Issuer)

                     Common Stock, Par Value $.001 Per Share
                         (Title of Class of Securities)

                                   847807 10 4
                                 (CUSIP Number)

                            Michael D. Fricklas, Esq.
                                   Viacom Inc.
                                  1515 Broadway
                            New York, New York 10036
                            Telephone: (212) 258-6000

            (Name, Address and Telephone Number of Person Authorized
                     to Receive Notices and Communications)



                                  May 17, 1999
             (Date of Event which Requires Filing of this Statement)
        -----------------------------------------------------------------

If the filing person has previously filed a statement on Schedule 13G to report
the acquisition  which is the subject of this  Schedule 13D, and is filing this
schedule because of Rule 13d-1(b)(3) or (4), check the following box |_|.
Check the following box if a fee is being paid with this statement |_|.




CUSIP No. 847807 10 4

(1)  Name of Reporting Person
     S.S. or I.R.S. Identification No. of Above Person
                               VIACOM INTERNATIONAL INC.
     ---------------------------------------------------------------------------
                               I.R.S. Identification No. 13-3844753
     ---------------------------------------------------------------------------

(2)  Check the Appropriate Box if a Member of Group (See Instructions)
     |_|  (a)
               -----------------------------------------------------------------
     |_|  (b)
               -----------------------------------------------------------------
(3)  SEC Use Only
                    ------------------------------------------------------------

(4)  Sources of Funds (See Instructions)          WC
                                        ----------------------------------------

(5)  Check if Disclosure of Legal Proceedings is Required Pursuant to Items
     2(d) or 2(e)
                    ------------------------------------------------------------

(6)  Citizenship or Place of Organization         Delaware
                                             -----------------------------------

- ---------------
Number of           (7)  Sole Voting Power
Shares                                            ------------------------------
Beneficially        (8)  Shared Voting Power           75,216,103
Owned by                                          ------------------------------
Each                (9)  Sole Dispositive Power
Reporting                                         ------------------------------
Person With         (10) Shared Dispositive Power      75,216,103
---------------                                   ------------------------------

(11) Aggregate Amount Beneficially Owned by Each Reporting Person
                    75,216,103
     ---------------------------------------------------------------------------

(12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares
     (See Instructions)
                         -------------------------------------------------------

(13) Percent of Class Represented by Amount in Row (11)
                    Approximately 80.6%
     ---------------------------------------------------------------------------

(14) Type of Reporting Person (See Instructions)            CO
                                                  ------------------------------


CUSIP No. 847807 10 4

(1)  Name of Reporting Person
     S.S. or I.R.S. Identification No. of Above Person
                               VIACOM INC.
     ---------------------------------------------------------------------------
                               I.R.S. Identification No. 04-2949533
     ---------------------------------------------------------------------------

(2)  Check the Appropriate Box if a Member of Group (See Instructions)
     |_|  (a)
               -----------------------------------------------------------------
     |_|  (b)
               -----------------------------------------------------------------

(3)  SEC Use Only
                    ------------------------------------------------------------

(4)  Sources of Funds (See Instructions)          WC
                                        ----------------------------------------

(5)  Check if Disclosure of Legal Proceedings is Required Pursuant to Items
     2(d) or 2(e)
                    ------------------------------------------------------------

(6)  Citizenship or Place of Organization         Delaware
                                             -----------------------------------

- ---------------
Number of           (7)  Sole Voting Power
Shares                                            ------------------------------
Beneficially        (8)  Shared Voting Power           75,216,103
Owned by                                          ------------------------------
Each                (9)  Sole Dispositive Power
Reporting                                         ------------------------------
Person With         (10) Shared Dispositive Power      75,216,103
---------------                                   ------------------------------

(11) Aggregate Amount Beneficially Owned by Each Reporting Person
                    75,216,103
     ---------------------------------------------------------------------------

(12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares
     (See Instructions)
                         -------------------------------------------------------

(13) Percent of Class Represented by Amount in Row (11)
                    Approximately 80.6%
     ---------------------------------------------------------------------------

(14) Type of Reporting Person (See Instructions)            CO
                                                  ------------------------------



CUSIP No. 847807 10 4

(1)  Name of Reporting Person
     S.S. or I.R.S. Identification No. of Above Person
                               SUMNER M. REDSTONE
     ---------------------------------------------------------------------------
                               S.S. No.
     ---------------------------------------------------------------------------

(2)  Check the Appropriate Box if a Member of Group (See Instructions)
     |_|  (a)
               -----------------------------------------------------------------
     |_|  (b)
               -----------------------------------------------------------------

(3)  SEC Use Only
                    ------------------------------------------------------------

(4)  Sources of Funds (See Instructions)
                                        ----------------------------------------

(5)  Check if Disclosure of Legal Proceedings is Required Pursuant to Items
     2(d) or 2(e)
                    ------------------------------------------------------------

(6)  Citizenship or Place of Organization         United States
                                             -----------------------------------

- ---------------
Number of           (7)  Sole Voting Power
Shares                                            ------------------------------
Beneficially        (8)  Shared Voting Power           75,216,103
Owned by                                          ------------------------------
Each                (9)  Sole Dispositive Power
Reporting                                         ------------------------------
Person With         (10) Shared Dispositive Power      75,216,103
---------------                                   ------------------------------

(11) Aggregate Amount Beneficially Owned by Each Reporting Person
                    75,216,103
     ---------------------------------------------------------------------------

(12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares
     (See Instructions)
                         -------------------------------------------------------

(13) Percent of Class Represented by Amount in Row (11)
                    Approximately 80.6%
     ---------------------------------------------------------------------------

(14) Type of Reporting Person (See Instructions)            CO
                                                  ------------------------------


          This Amendment No. 21 amends the Statement on Schedule 13D filed
with the  Securities  and Exchange  Commission  on March 7, 1993 by  Blockbuster
Entertainment  Corporation  ("BEC"),  Blockbuster  Pictures Holding  Corporation
("Holdings"),  SEGI Holding Company ("SEGI") and Repinvesco,  Inc. ("REPI"),  as
amended (the  "Statement").  This  Amendment No. 21 is filed with respect to the
shares of common  stock,  par value  $.001 per share (the  "Common  Stock"),  of
Spelling Entertainment Group Inc. (the "Issuer"),  a Delaware corporation,  with
its principal executive offices located at 5700 Wilshire Boulevard, Los Angeles,
California  90036.  Capitalized  terms  used  but not  defined  herein  have the
meanings assigned to such terms in the Statement.


Item 3.   Source and Amount of Funds or other Consideration.
          --------------------------------------------------

          Item 3 is hereby amended and supplemented as follows:

          Purchases of Common Stock  reported in this Amendment No. 21 were, and
any  purchases of Common  Stock  hereafter as described in Item 4 shall be, made
using working capital of Viacom International Inc.


Item 4.   Purpose of Transaction.
          -----------------------

          Item 4 is hereby amended and supplemented as follows:

          On May 17, 1999, Viacom  International Inc.  ("Viacom") and the Issuer
entered into a definitive merger agreement (the "Merger Agreement")  pursuant to
which Viacom will  commence a tender offer (the "Tender  Offer") to purchase all
of the issued and  outstanding  shares of Common  Stock not  currently  owned by
Viacom for a cash price of $9.75 per share. The Merger Agreement  provides that,
as soon as  practical  after the  Tender  Offer,  the  Issuer  will merge with a
subsidiary of Viacom and each share of Common Stock that is not purchased in the
Tender Offer will be acquired for $9.75 per share.

          A copy of the Merger  Agreement is attached hereto as Exhibit 99.1 and
incorporated by reference herein.

          A copy of a press release issued by Viacom on May 17, 1999 is attached
hereto as Exhibit 99.2.


Item 5.   Interest in Securities of the Issuer.
          -------------------------------------

          Item 5 is amended and supplemented as follows:

          (a)  VIACOM INTERNATIONAL INC. is currently the beneficial owner, with
               shared  dispositive  and voting power, of 75,216,103  shares,  or
               approximately 80.6% of the issued and outstanding Common Stock of
               the Issuer.

          (b)  Viacom  INC.  is  currently  the  beneficial  owner,  with shared
               dispositive   and  voting  power,   of  75,216,103   shares,   or
               approximately 80.6% of the issued and outstanding Common Stock of
               the Issuer.

          (c)  MR. SUMNER M. REDSTONE is currently the  beneficial  owner,  with
               shared  dispositive  and voting power, of 75,216,103  shares,  or
               approximately 80.6% of the issued and outstanding Common Stock of
               the Issuer.

 Transactions effected since the filing of Amendment No. 20 on March 19, 1999.

                                           

            DATE      NO. OF SHARES      PRICE       WHERE AND HOW EXECUTED
          3/20/99         6,750         $9.0000        Private Purchase,
                                                      New York, New York
          3/22/99        27,000         $9.0000             "
          3/23/99         8,125         $9.0000             "
          4/13/99        44,847         $9.0000             "
          4/23/99        87,500         $9.0000             "

                  All of the above transactions were purchases.



Item 6.   Contracts, Arrangements, Understandings or Relationships with Respect
          to the Securities of the Issuer.
          ----------------------------------------------------------------------

          Item 6 of the Schedule 13D is hereby amended and supplemented by
reference to the amendment to Item 4 of the Schedule 13D set forth above.


Item 7.   Material to be filed as Exhibits.
          ---------------------------------

          99.1      Agreement  and Plan of  Merger  among  Viacom  International
                    Inc., VSEG Acquisition Inc. and Spelling Entertainment Group
                    Inc., dated as of May 17, 1999.

          99.2      Press Release issued by Viacom Inc. on May 17, 1999

          99.3      Agreement among Viacom  International  Inc., Viacom Inc. and
                    Sumner M. Redstone pursuant to Rule 13d-1(f)(1)(iii).



Signature
- ---------

          After reasonable inquiry and to the best of our knowledge and
belief,  we certify that the  information  set forth in this  Statement is true,
complete and correct.


May 17, 1999                  VIACOM INTERNATIONAL INC.


                              By:       \S\  Michael D. Fricklas
                                        --------------------------
                              Name:     Michael D. Fricklas
                              Title:    Senior Vice President




Signature
- ---------

          After reasonable  inquiry and to the best of our knowledge and belief,
we certify that the  information  set forth in this Statement is true,  complete
and correct.


May 17, 1999                  VIACOM INC.


                              By:       \S\  Michael D. Fricklas
                                        ------------------------------
                              Name:     Michael D. Fricklas
                              Title:    Senior Vice President,
                                        General Counsel and Secretary



Signature
- ---------

          After reasonable inquiry and to the best of my knowledge and
belief,  I certify  that the  information  set forth in this  Statement is true,
complete and correct.



May 17, 1999                  By:            *
                                   ---------------------------------
                                   Sumner M. Redstone,
                                   Individually





*By: \S\  Philippe P. Dauman
     --------------------------------
     Philippe P. Dauman
     Attorney-in-Fact under the
     Limited Power of Attorney
     filed as Exhibit 99.2 to the
     Statement, Amendment No. 11



                                  EXHIBIT INDEX
                                 ---------------

Exhibit No.         Description
- -----------         -----------

     99.1           Agreement  and Plan of  Merger  among  Viacom  International
                    Inc., VSEG Acquisition Inc. and Spelling Entertainment Group
                    Inc., dated as of May 17, 1999.

     99.2           Press Release issued by Viacom Inc. on May 17, 1999

     99.3           Agreement among Viacom  International  Inc., Viacom Inc. and
                    Sumner M. Redstone pursuant to Rule 13d-1(f)(1)(iii).