Margot Kidder is Danielle, a beautiful model separated from her Siamese twin, Dominique. When a hotshot reporter (Jennifer Salt) suspects Dominique of a brutal murder, she becomes dangerously ensnared in the sistersâ insidious sibling bond. A scary and stylish paean to female destructiveness, Brian De Palmaâs first foray into horror voyeurism is a stunning amalgam of split-screen effects, bloody birthday cakes, and a chilling score by frequent Hitchcock collaborator Bernard Herrmann.
New interview with actor Jennifer Salt
Interviews from 2004 with Brian De Palma, actors Bill Finley and Charles Durning, and producer Edward R. Pressman
Audio from a 1973 discussion with Brian De Palma at the AFI
Appearance from 1970 by actor Margot Kidder on The Dick Cavett Show
An essay by critic Carrie Rickey, excerpts from a 1973 interview with Brian De Palma on the making of the film, and a 1973 article by Brian De Palma on working with composer Bernard Hermann