Sisters

Philip Woode is the victim of a prank on a Candid Camera-style television show and wins a dinner for two at a New York restaurant. He takes Danielle Breton, a naive young Canadian model and aspiring actress, to dinner with Danielle's ex-husband. The two make love on the living room sofa and Danielle is stabbed to death by her sister Dominique, who is crazed and delirious. The murder is witnessed by Grace Collier, a reporter who lives in an apartment across the way, who calls the police. Grace is convinced that Danielle is hiding the murderer, and forces her to take along