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.

• Amicus Productions
• Peter Cushing
• Patrick Magee
• Herbert Lom
• Britt Ekland
• Barry Morse
• Charlotte Rampling
• Barbara Parkins
• Robert Powell