A British scientist is discovered to have been passing information to the Communists, then kills himself. Another scientist decides that they might have brainwashed him by a sensory deprivation technique, but he doesn’t know if someone really can be convinced to act against their strongest feelings. So he agrees to be the subject in an experiment in which others will try to make him stop loving his wife.
| Production | Charles Orme | Production Manager |
| Writing | James Kennaway | Screenplay |
| Production | Michael Relph | Producer |
| Sound | Georges Auric | Original Music Composer |
| Directing | Basil Dearden | Director |
| Costume & Make-Up | Anthony Mendleson | Costume Design |
| Editing | John D. Guthridge | Editor |
| Camera | Denys N. Coop | Director of Photography |
| Directing | Susan Dyson | Continuity |
| Sound | Muir Mathieson | Conductor |
| Sound | Robert T. MacPhee | Sound Re-Recording Mixer |
| Directing | Basil Rayburn | Assistant Director |
| Costume & Make-Up | Pearl Orton | Hairdresser |
| Art | Jim Morahan | Art Direction |
| Art | Bill Surridge | Construction Manager |
| Sound | Gordon K. McCallum | Sound Recordist |
| Sound | Vivian Temple-Smith | Sound Recordist |
| Camera | Eric Besche | Camera Operator |
| Costume & Make-Up | Harry Frampton | Makeup Artist |
