 | George Zucco als Leo Grainger |
 | Lionel Atwill als Alec Ritchfield |
 | Jerome Cowan als John Kavanaugh |
 | Veda Ann Borg als Sylvia Jordan |
 | Sharon Douglas als Gail |
 | John Whitney als Jeff Kingsley |
 | Jacqueline deWit als Emiline Bronson (as Jacqueline DeWit) |
 | Ian Keith als Dr. Lake |
 | George Lloyd als Allerton, Butler |
| Terry O. Morse | Director |
| Pierre Gendron | Screenplay |
| Bernadine Angus | Theatre Play |
| Larry Judge | Wardrobe Designer |
| Terry O. Morse | Associate Producer |
| Paul Palmentola | Art Direction |
| Harry Reif | Set Decoration |
| Ira H. Morgan | Director of Photography |
| George McGuire | Editor |
| Leon Fromkess | Producer |
| Karl Hajos | Original Music Composer |
| William A. Calihan Jr. | Assistant Director |
| Charles Stevens | Property Master |
| William R. Fox | Sound Engineer |
| Eddie Parker | Stunts |
| Ralph Ash | Camera Operator |
| Jean Sharpless | Wardrobe Designer |
| Karl Hajos | Orchestrator |
