Trailer
 | Jeremy Kemp as Vince Howard |
 | Bernard Archard as Michael Forrest |
 | Rosemary Leach as Mary Bell |
 | Philip Locke as John Bell |
 | Ronald Leigh-Hunt as Prison Governer |
 | Jean Marsh as Grace |
 | Elizabeth Begley as Mrs. Holden |
 | Mike Pratt as Harry |
| Henry B. Longhurst as Peters |
 | Alec Bregonzi as Garage Proprietor |
| Keith Smith as Ticket Collector |
| Edward Dentith as Prison Officer |
| Victor Charrington as Chief Prison Officer |
| Directing | |
| John Llewellyn Moxey | Director |
Production | |
| Jack Greenwood | Producer |
Editing | |
| Derek Holding | Editor |
Sound | |
| Bernard Ebbinghouse | Music |
Camera | |
| James Wilson | Director of Photography |
Writing | |
| Jimmy Sangster | Screenplay |
| Edgar Wallace | Novel |
Costume & Make-Up | |
| Connie Able | Hairdresser |
Production | |
| Ronnie Curtis | Casting Director |
Art | |
| John Blezard | Art Direction |
Costume & Make-Up | |
| Benny Royston | Makeup Artist |
Production | |
| Ron Fry | Production Manager |
Directing | |
| Ted Lewis | Assistant Director |
Sound | |
| Brian Blamey | Sound Editor |
| Gordon Everett | Sound Recordist |
| Sidney Rider | Sound Recordist |
Camera | |
| Peter Allwork | Camera Operator |
| John Stanier | Assistant Camera |
