Elliot, a successful gynecologist, works at the same practice as his identical twin, Beverly. Elliot is attracted to many of his patients and has affairs with them. When he inevitably loses interest, he will give the woman over to Beverly, the meeker of the two, without the woman knowing the difference. Beverly falls hard for one of the patients, Claire, but when she inadvertently deceives him, he slips into a state of madness.
Jeremy Irons
as Beverly Mantle / Elliot Mantle
Geneviève Bujold
as Claire Niveau
Heidi von Palleske
as Cary
Barbara Gordon
as Danuta
Shirley Douglas
as Laura
Stephen Lack
as Wolleck / Anders Wolleck
Nick Nichols
as Leo
Lynne Cormack
as Arlene
Damir Andrei
as Birchall
Miriam Newhouse
as Mrs. Bookman
David Hughes
as Superintendent
Richard W. Farrell
as Dean of Medicine
