Men from Scotland Yard and military intelligence build a dossier on a sabotage ring.
| Writing | Roy Boulting | Screenplay |
| Directing | Roy Boulting | Director |
| Writing | Frank Harvey | Screenplay |
| Costume & Make-Up | Biddy Chrystal | Hairstylist |
| Camera | Gilbert Taylor | Director of Photography |
| Editing | Max Benedict | Editor |
| Production | Paul Soskin | Producer |
| Costume & Make-Up | W.T. Partleton | Makeup Artist |
| Sound | John Addison | Music |
| Art | Alex Vetchinsky | Set Decoration |
| Camera | Ray Sturgess | Camera Operator |
