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From: Tony Williams
 The 60s Bette Davis twin movie is called DEAD RINGERS, I think. What about
trying the various movie encyclopedias also. Also Cronenberg's film with the
same title as above. There is also a Michael Moriarty movie made in the mid-
80s, directed by Alberto de Martino called BLOOD LINK. Why not try the
American Film Institute Catalog of Feature Films. The indexes are very
good in most of them.