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Lon Chaney Jr. as Dr. Mark Steel |
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Patricia Morison as Stella Madden |
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J. Carrol Naish as Inspector Gregg |
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David Bruce as Robert 'Bob' Duval |
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Ramsay Ames as Maria Steele |
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Fay Helm as Mrs. Duval |
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Holmes Herbert as Bryant, the Butler |
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Alec Craig as Bill, the Watchman |
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Frederick Giermann as Marion's Father (as Fred Gierman) |
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Lisa Golm as Marion's Mother |
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Charles Wagenheim as Coroner |
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Mary Hale as Marion |
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George Eldredge as District Attorney |
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John Elliott as Priest |
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Earle Hodgins as |
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Charles R. Moore as |
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Norman Rainey as |
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Kernan Cripps as |
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Al Ferguson as |
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Robert F. Hill as |
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David Hoffman as |
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Perc Launders as |
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Rex Lease as |
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Frank Marlowe as |
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Paul Phillips as |
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Jack Rockwell as |
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Jack C. Smith as |
| Camera | Virgil Miller | Director of Photography |
| Directing | Reginald Le Borg | Director |
| Writing | Edward Dein | Screenplay |
| Art | A.J. Gilmore | Set Decoration |
| Sound | Bernard B. Brown | Sound Director |
| Art | Ralph M. DeLacy | Art Direction |
| Sound | William Hedgcock | Sound |
| Visual Effects | John P. Fulton | Visual Effects |
| Art | John B. Goodman | Art Direction |
| Costume & Make-Up | Vera West | Costume Designer |
| Art | Russell A. Gausman | Set Decoration |
| Directing | Charles S. Gould | Assistant Director |
| Sound | Paul Sawtell | Music |
| Editing | Norman A. Cerf | Editor |
| Production | Ben Pivar | Associate Producer |
