The Mind Benders

Basil Dearden directs this sci-fi drama starring Dirk Bogarde. After a fellow scientist accused of passing secrets to the communists commits suicide, Dr Henry Longman (Dirk Bogarde) submits himself to a particularly dangerous experiment in total isolation to try and prove that his colleague had been brainwashed. Although he doubts whether the technique can actually work, Longman proceeds with the experiment, depriving himself of his senses by being submerged in a tank of water for ten hours.