Directed by
| Chester M. Franklin | ||
Writing Credits (in alphabetical order)
| Chester M. Franklin | ... | (screenplay) |
| Chester M. Franklin | ... | (story) |
| Douglas Furber | ... | (screenplay) |
| Douglas Furber | ... | (story) |
| Edward T. Lowe Jr. | ||
| Wellyn Totman | ... | (titles) |
Cast (in credits order)
| Lionel Barrymore | ... | Professor Leroy | |
| Jacqueline Gadsdon | ... | Mary Lyle (as Jacquelin Gadsdon) | |
| Charles Delaney | ... | Matt Gray | |
| Fred Kelsey | ... | Detective Shaw | |
| Polly Moran | ... | Polly | |
| Napoleon the Dog | ... | The Detective's Dog | |
| Rest of cast listed alphabetically: | |||
| Lucy Beaumont | ... | Woman Strangled at Mansion (uncredited) | |
| Sôjin Kamiyama | ... | Menace (uncredited) | |
Cinematography by
| Max Fabian | ... | (as Maximilian Fabian) |
Editing by
| Dan Sharits | ||
Art Department
| Eugene Hornboestel | ... | sets (as Eugene Hornbostel) |
| Glenn Cravath | ... | poster artist (uncredited) |
