
A young psychiatrist applies for a job at a mental asylum and must pass a test by interviewing four patients. He must figure out which of the patients, is in fact, the doctor that he would be replacing if hired.
Cast

Peter Cushing
Smith

Patrick Magee
Dr. Lionel Rutherford

Herbert Lom
Byron

Britt Ekland
Lucy

Barry Morse
Bruno

Charlotte Rampling
Barbara

Barbara Parkins
Bonnie

Robert Powell
Dr. Martin

Sylvia Syms
Ruth

Richard Todd
Walter

James Villiers
George

Geoffrey Bayldon
Max Reynolds

Ann Firbank
Anna

Megs Jenkins
Nurse Higgins

John Franklyn-Robbins
Mr. Stebbins
Crew

Roy Ward Baker
Director

Robert Bloch
Writer, Story
Peter Tanner
Editor
Denys N. Coop
Director of Photography
Gustave M. Berne
Executive Producer

Milton Subotsky
Producer
Max Rosenberg
Producer
Ronnie Curtis
Casting
Joan Carpenter
Hairdresser
Roy Ashton
Makeup Artist
Clive Smith
Sound Editor
Norman Bolland
Sound Mixer
Douglas Gamley
Original Music Composer
Tony Curtis
Art Direction



















