Directed by
| Roland West | ... | (uncredited) |
Writing Credits (in alphabetical order)
| Avery Hopwood | ... | (play) |
| Julien Josephson | ||
| George Marion Jr. | ... | (titles) |
| Mary Roberts Rinehart | ... | (play) |
| Roland West | ... | (adaptation) (uncredited) |
Cast (in credits order) verified as complete
| George Beranger | ... | Gideon Bell (as André de Béranger) | |
| Charles Herzinger | ... | Man in Black Mask | |
| Emily Fitzroy | ... | Miss Cornelia Van Gorder | |
| Louise Fazenda | ... | Lizzie Allen | |
| Arthur Housman | ... | Richard Fleming (as Arthur Houseman) | |
| Robert McKim | ... | Dr. Wells | |
| Jack Pickford | ... | Brooks Bailey | |
| Jewel Carmen | ... | Miss Dale Ogden | |
| Sôjin Kamiyama | ... | Billy - The Butler (as Sojin Kamiyama) | |
| Tullio Carminati | ... | Detective Moletti | |
| Eddie Gribbon | ... | Detective Anderson | |
| Lee Shumway | ... | The Unknown | |
| Rest of cast listed alphabetically: | |||
| Stanton Heck | ... | Police Officer (uncredited) | |
Produced by
| Roland West | ... | producer |
Cinematography by
| Arthur Edeson | ||
| Gregg Toland | ... | (uncredited) |
Editing by
| Hal C. Kern | ||
Art Department
| William Cameron Menzies | ... | settings |
| Harvey Meyers | ... | scenic artist (uncredited) |
Camera and Electrical Department
| Gregg Toland | ... | assistant camera |
Additional Crew
| Frank Hall Crane | ... | assistant on production |
| Thornton Freeland | ... | assistant on production |
| Hal C. Kern | ... | assistant on production |
| Ned Mann | ... | assistant on production (as Ned Herbert Mann) |
| Roland West | ... | presenter |
