An insane murderer is on the loose, and gunning for the men who put him away. Will Hay is on the list, and co-opts Claude Hulbert to try and stop him from meeting a grisly end.
| Directing | Will Hay | Director |
| Directing | Basil Dearden | Director |
| Sound | Len Page | Sound Recordist |
| Writing | Angus MacPhail | Screenplay |
| Production | Michael Balcon | Producer |
| Writing | John Dighton | Screenplay |
| Camera | Wilkie Cooper | Director of Photography |
| Editing | Charles Hasse | Editor |
| Crew | Roy Kellino | Special Effects |
| Sound | Ernest Irving | Music |
| Production | John Croydon | Production Supervisor |
| Art | Michael Relph | Art Direction |
| Costume & Make-Up | Marianne | Wardrobe Designer |
