Directed by
| Lewis D. Collins | ||
Writing Credits
| Albert DeMond | ... | (screenplay) & |
| Sidney Sutherland | ... | (screenplay) |
| Anna Katharine Green | ... | (original story) (as Anna Katherine Green) |
Cast (in credits order) complete, awaiting verification
| Donald Cook | ... | Dr. Truman Harwell | |
| Jean Rouverol | ... | Eleanore Leavenworth | |
| Norman Foster | ... | Detective Bob Grice | |
| Erin O'Brien-Moore | ... | Mrs. Silas (Gloria) Leavenworth | |
| Maude Eburne | ... | Phoebe Leavenworth | |
| Warren Hymer | ... | Detective O'Malley | |
 |
Jocko | ... | Jocko the Monkey |
| Frank Sheridan | ... | Silas Leavenworth | |
| Gavin Gordon | ... | Henry Clavering | |
| Clay Clement | ... | Inspector Holmes | |
| Ian Wolfe | ... | Hudson | |
| Peggy Stratford | ... | Miss Owens | |
| Archie Robbins | ... | Duke | |
|
|
Bess Stafford | ... | The Bulldog Woman |
| Lucille Ward | ... | The Pekingese Woman | |
| Belle Mitchell | ... | The Cat Woman | |
|
|
Marie Rice | ... | Sarah - a servant |
| Carl Stockdale | ... | Leavenworth-Clavering Bookkeeper | |
| Rest of cast listed alphabetically: | |||
| Broderick O'Farrell | ... | Chemical Analysist (uncredited) | |
| Dagmar Oakland | ... | Miss Hill (uncredited) | |
|
|
Lee Prather | ... | Fingerprint Expert (uncredited) |
Cinematography by
| Jack A. Marta | ... | (as Jack Marta) |
| Ernest Miller | ||
Editing by
| Dan Milner | ||
Production Management
| Ken Goldsmith | ... | production supervisor |
Sound Department
| Roy Granville | ... | sound effects editor |
| Terry Kellum | ... | sound engineer |
Editorial Department
| Joseph H. Lewis | ... | supervising editor |
Music Department
| Arthur Kay | ... | composer: stock music (uncredited) |
