The first manned spacecraft, fired from an English launchpad, is first lost from radar, then roars back to Earth and crashes in a farmer's field, and is found to contain only one of the three men who took off in it; and he is unable to talk but appears to be undergoing a torturous physical and mental metamorphosis.
| Writing | Val Guest | Screenplay |
| Writing | Richard H. Landau | Screenplay |
| Directing | Val Guest | Director |
| Sound | James Bernard | Original Music Composer |
| Editing | James Needs | Editor |
| Art | J. Elder Wills | Art Direction |
| Production | Anthony Hinds | Producer |
| Camera | Walter J. Harvey | Director of Photography |
| Costume & Make-Up | Philip Leakey | Makeup Artist |
| Crew | Les Bowie | Special Effects |
| Writing | Nigel Kneale | Teleplay |
| Directing | Bill Shore | Assistant Director |
| Sound | H. C. Pearson | Sound Recordist |
| Costume & Make-Up | Monica Hustler | Hairstylist |
| Costume & Make-Up | Molly Arbuthnot | Wardrobe Supervisor |
| Sound | John Hollingsworth | Music Director |
| Production | T.S. Lyndon-Haynes | Production Manager |
