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Lon Chaney Jr. as Prof. Norman Reed |
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Anne Gwynne as Paula Clayton Reed |
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Evelyn Ankers as Illona Carr |
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Ralph Morgan as Prof. Millard Sawtelle |
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Elisabeth Risdon as Dean Grace Gunnison |
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Lois Collier as Margaret Mercer |
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Harry Hayden as Dean Septimus Carr |
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Elizabeth Russell as Evelyn Sawtelle |
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Phil Brown as David Jennings |
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Kay Harding as Student |
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Gertrude Astor as Party Guest (uncredited) |
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Edmund Mortimer as Party Guest (uncredited) |
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Larry Steers as Party Guest (uncredited) |
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Chuck Hamilton as The Carpenter (uncredited) |
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David Hoffman as The Spirit of the Inner Sanctum (uncredited) |
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William Hudson as Second Gossiping Male Student (uncredited) |
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Milburn Stone as |
| Directing | Reginald Le Borg | Director |
| Writing | Scott Darling | Adaptation |
| Writing | Fritz Leiber Jr. | Novel |
| Production | Oliver Drake | Associate Producer |
| Production | Ben Pivar | Producer |
| Camera | Virgil Miller | Director of Photography |
| Sound | Bernard B. Brown | Sound Director |
| Sound | William Hedgcock | Sound |
| Visual Effects | John P. Fulton | Visual Effects |
| Costume & Make-Up | Vera West | Costume Designer |
| Sound | Paul Sawtell | Original Music Composer |
| Art | John B. Goodman | Art Direction |
| Art | Richard H. Riedel | Art Direction |
| Art | Russell A. Gausman | Set Decoration |
| Art | A.J. Gilmore | Set Decoration |
| Directing | William Tummel | Assistant Director |
| Editing | Milton Carruth | Editor |
| Writing | Brenda Weisberg | Screenplay |
