Trailer
| Leslie Faber as Doctor Lomond |
 | Annette Benson as Cora Ann Milton |
 | Lawson Butt as Maurice Meister |
 | Nigel Barrie as Inspector Wembury |
 | Hayford Hobbs as Inspector Bliss |
 | John Hamilton as John Lenley |
 | Muriel Angelus as Mary Lenley |
| Charles Emerald as Sam Hackett |
| Esther Rhodes as Gwenda Milton |
| Writing | |
| Edgar Wallace | Theatre Play |
| Edgar Wallace | Scenario Writer |
Directing | |
| Arthur Maude | Director |
