Directed by
| Reginald Denham | ||
Writing Credits (in alphabetical order)
| Reginald Denham | ... | (scenario) |
| Edgar Wallace | ... | (novel) |
| Howard Irving Young | ||
Cast (in credits order)
| Hugh Wakefield | ... | Derek Yale | |
| Alfred Drayton | ... | Insp. Parr | |
| Niall MacGinnis | ... | Jack Beardmore | |
| June Duprez | ... | Sylvia Hammond | |
 |
Paul Blake | ... | Sgt. Webster |
| Noah Beery | ... | Felix Marl | |
| Basil Gill | ... | James Beardmore | |
|
|
Gordon McLeod | ... | Brabazon |
| Renee Gadd | ... | Millie Macroy | |
| Ralph Truman | ... | Lawrence Fuller | |
| Robert Rendel | ... | Commissioner | |
| Rest of cast listed alphabetically: | |||
|
|
Monti DeLyle | ||
| William Hartnell | ... | (as Billy Hartnell) | |
|
|
Andrew Leigh | ||
|
|
Henry B. Longhurst | ... | Inspector Clements (uncredited) |
Produced by
| Richard Wainwright | ... | producer |
Cinematography by
| Philip Tannura | ... | (as Phil Tannura) |
Editing by
| Inman Hunter | ... | (as E.M. Hunter) |
Art Direction by
| D.W. Daniels | ||
Production Management
| W.J. Dodds | ... | production manager (as J.W. Dodds) |
Sound Department
| John K. Byers | ... | sound engineer (as J.K. Byers) |
