Bari Woods' novel "Twins" became this 1988 film starring Jeremy Irons in a dual role
[DOC] [TLE] Amazon.com: Customer Reviews: Dead Ringers [PAR] The movie stars -- and stars again -- Jeremy Irons as twin gynecologists, Beverly 
and Elliot .... which was based on the novel "Twins" by Bari Wood and Jack 
Geasland.