Directed by
| Harold French | ||
Writing Credits
| A.E.W. Mason | ... | (story) |
| Doreen Montgomery | ... | (scenario) |
| Denis Waldock | ... | (screenplay collaborator) |
Cast (in credits order)
| Kenneth Kent | ... | Inspector Hanaud | |
| Diana Churchill | ... | Betty Harlowe | |
| Belle Chrystall | ... | Ann Upcott | |
| Peter Murray-Hill | ... | Jim Frobisher | |
| Clifford Evans | ... | Maurice Thevenet | |
 |
Louise Hampton | ... | Mme. Harlow |
| Catherine Lacey | ... | Francine Rollard | |
| Aubrey Dexter | ... | Giradot | |
| James Harcourt | ... | Boris Raviart | |
| Ivor Barnard | ... | Jean Cladel | |
| Rest of cast listed alphabetically: | |||
| Athene Seyler | ... | (uncredited) | |
Produced by
| Walter C. Mycroft | ... | producer |
Cinematography by
| Walter J. Harvey | ... | (as Walter Harvey) |
Editing by
| Edward B. Jarvis | ... | (as E.B. Jarvis) |
Art Department
| John Mead | ... | settings |
Camera and Electrical Department
| Harry Gillam | ... | camera operator (uncredited) |
