Directed by
| Ray Taylor | ||
Writing Credits (in alphabetical order)
| Harold M. Atkinson | ... | (scenario) |
| Harold M. Atkinson | ... | (story) |
Cast (in credits order)
| Crauford Kent | ... | Inspector Angus Blake | |
| Florence Allen | ... | Lady Diana Blanton | |
| Albert Prisco | ... | Prince Darius (as Albert Priscoe) | |
| Monte Montague | ... | Jarvis | |
| Grace Cunard | ... | Mary Duveen- aka Queen of Diamonds | |
| Herbert Prior | ... | Lord Blanton | |
Produced by
| Henry MacRae | ... | producer |
Cinematography by
| John Hickson | ||
Editing by
| Alvin Todd | ||
Additional Crew
| Carl Laemmle | ... | presenter |
