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Vincent Price as Dr. Malcolm Wells |
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Agnes Moorehead as Cornelia van Gorder |
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Gavin Gordon as Lt. Andy Anderson |
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John Sutton as Warner, the Chauffeur |
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Lenita Lane as Lizzie Allen |
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Elaine Edwards as Dale Bailey |
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Darla Hood as Judy Hollander |
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John Bryant as Mark Fleming |
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Harvey Stephens as John Fleming |
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Mike Steele as Victor Bailey |
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Riza Royce as Jane Patterson |
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Robert B. Williams as Detective Davenport |
| Directing | Crane Wilbur | Director |
| Sound | Louis Forbes | Original Music Composer |
| Camera | Joseph F. Biroc | Director of Photography |
| Costume & Make-Up | Kiva Hoffman | Makeup Artist |
| Art | Dave Milton | Art Direction |
| Writing | Crane Wilbur | Screenplay |
| Writing | Avery Hopwood | Theatre Play |
| Writing | Mary Roberts Rinehart | Theatre Play |
| Writing | Crane Wilbur | Screenstory |
| Production | C.J. Tevlin | Producer |
| Art | Rudy Butler | Set Decoration |
| Editing | William Austin | Editor |
| Camera | Harry Lewis | Grip |
| Directing | Cliff P. Broughton | Assistant Director |
| Directing | Arthur M. Broidy | Assistant Director |
| Sound | Charles G. Schelling | Sound Editor |
| Sound | Neil Brunnenkant | Music Editor |
