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Nina Foch as Julia Ross |
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May Whitty as Mrs. Hughes |
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George Macready as Ralph Hughes |
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Roland Varno as Dennis Bruce |
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Anita Sharp-Bolster as Sparkes |
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Doris Lloyd as Mrs. Mackie |
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Queenie Leonard as Alice (uncredited) |
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Joy Harington as Bertha (uncredited) |
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Leonard Mudie as Peters (uncredited) |
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Ottola Nesmith as Mrs. Robinson (uncredited) |
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Milton Owen as Policeman (uncredited) |
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Olaf Hytten as The Reverend Lewis (uncredited) |
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Leyland Hodgson as Policeman (uncredited) |
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Marilyn Johnson as Nurse (uncredited) |
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Charles McNaughton as Gatekeeper (uncredited) |
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Harry Hays Morgan as Robinson (uncredited) |
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Reginald Sheffield as McQuarrie (uncredited) |
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Evan Thomas as Dr. Keller (uncredited) |
| Directing | Joseph H. Lewis | Director |
| Writing | Muriel Roy Bolton | Screenplay |
| Editing | Henry Batista | Editor |
| Camera | Burnett Guffey | Director of Photography |
| Production | Wallace MacDonald | Producer |
| Writing | Anthony Gilbert | Novel |
| Art | Milton Stumph | Set Decoration |
| Visual Effects | Donald C. Glouner | Matte Painter |
| Camera | Gert Andersen | Second Assistant Camera |
| Crew | Mario Castelnuovo-Tedesco | Additional Music |
| Crew | Daniele Amfitheatrof | Additional Music |
| Crew | John Leipold | Additional Music |
| Crew | Friedrich Hollaender | Additional Music |
| Sound | Glenn Rominger | Sound Re-Recording Mixer |
| Production | Vera Mikol | Researcher |
| Crew | Ernst Toch | Additional Music |
| Directing | Milton Feldman | Assistant Director |
| Camera | Ned Scott | Still Photographer |
| Art | Jerome Pycha Jr. | Art Direction |
| Costume & Make-Up | Jean Louis | Costume Design |
| Sound | Lambert E. Day | Sound |
| Sound | Edwin Wetzel | Scoring Mixer |
| Crew | George Duning | Additional Music |
| Crew | Lawrence W. Butler | Special Effects |
| Sound | Mischa Bakaleinikoff | Original Music Composer |
