Mary Steenburgen gives an arresting performance as an actress-in-distress in an isolated country estate. She has been called there by psychiatrist/now-turned film producer Roddy McDowall to "double" for an actress who has suffered a complete nervous breakdown during production of a film. Arriving during a violent snowstorm, she undergoes a complete makeover until she--almost uncannily--resembles the ill actress. But, she will discover that her real role is not to act in a film but to act as the real-life double of the actually quite-dead actress in a ruthless blackmailing scheme. When she attempts to escape, she will find herself under the tender psychiatric care of the murderous McDowall. The suspense-inducing direction is by Arthur Penn.