| Director | Freddie Francis |
|---|
Dr Peter Corrie and his colleague Dr. Frank Shears remove the brain from the corpse of tycoon Max Holt, who was injured in an air-crash but subsequently died. Corrie attempts to keep the removed brain alive in a chemical bath. The brain hypnotically controls him, and Corrie suspects Holt was murdered. Corrie is framed for the murder of Holt's chauffeur Thomas Gabler, and under the brain's control, Corrie almost commits murder himself. Shears disconnects the brain's support system, and Corrie tracks down Holt's murderer.