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Dorothy Adams as Dr. Trykel's Associate |
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Morris Ankrum as Narrator (voice) |
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Ralph Dunn as Detective Lester |
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Harry Hayden as Gus Conklin |
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Lloyd Ingraham as High School Principal |
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Howard M. Mitchell as Butcher |
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Frank Reicher as Philip Kenneson, Sr. |
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Arthur Shields as Dr. Rupert Trykel |
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Ann Shoemaker as Mrs. Martha Kenneson |
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Crane Whitley as Inspector Becker |
| Directing | Harold Young | Director |
| Writing | Brainerd Duffield | Original Story |
| Writing | Edward Bock | Screenplay |
| Sound | Max Terr | Music |
| Editing | Harry Komer | Editor |
| Art | Richard Duce | Art Direction |
| Sound | Albert Glasser | Orchestrator |
| Camera | Jackson Rose | Director of Photography |
