World War II drama in which a member of the French Resistance and three British agents undertake a hazardous mission to infiltrate a German HQ in search of vital information that could lead to the overthrow of the Nazis.
| Writing | Basil Bartlett | Screenplay |
| Directing | Harold French | Director |
| Writing | Terence Young | Story |
| Writing | Anatole de Grunwald | Screenplay |
| Production | Marcel Hellman | Producer |
| Sound | Mischa Spoliansky | Music |
| Camera | Bernard Knowles | Director of Photography |
| Editing | Edward B. Jarvis | Editor |
| Art | Carmen Dillon | Art Direction |
| Camera | Cyril J. Knowles | Camera Operator |
| Crew | W. Percy Day | Special Effects |
| Crew | Jack Mills | Special Effects |
| Art | Paul Sheriff | Supervising Art Director |
| Costume & Make-Up | George Blackler | Makeup Artist |
| Sound | John Dennis | Sound Recordist |
