Struggling actress Katie McGovern (Mary Steenburgen) is approached by the mysterious Mr. Murray (Roddy McDowall) and invited to an upstate New York mansion to film a screen test. There she meets Dr. Joseph Lewis (Jan Rubes), who is eager to hire Katie as a replacement for an actress who's suffered a nervous breakdown. But the film shoot takes a sordid turn as Katie begins to understand that her role is simply a pawn in Lewis' twisted blackmail games.