A newlywed suspects her husband of being a Communist spy.
| Editing | Frank Clarke | Editor |
| Production | Arthur Hornblow Jr. | Producer |
| Directing | Victor Saville | Director |
| Writing | Sally Benson | Screenplay |
| Writing | Sally Benson | Adaptation |
| Camera | Freddie Young | Director of Photography |
| Writing | Gerard Fairlie | Adaptation |
| Writing | Humphrey Slater | Novel |
| Art | Alfred Junge | Art Direction |
| Sound | A.W. Watkins | Recording Supervision |
| Production | Dora Wright | Production Manager |
| Visual Effects | Tom Howard | Visual Effects |
| Camera | Skeets Kelly | Camera Operator |
| Sound | Sash Fisher | Sound Recordist |
| Sound | John Wooldridge | Original Music Composer |
