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David Hedison as Andre Delambre |
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Patricia Owens as Helene Delambre |
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Vincent Price as François Delambre |
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Herbert Marshall as Insp. Charas |
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Kathleen Freeman as Emma |
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Betty Lou Gerson as Nurse Andersone |
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Charles Herbert as Philippe Delambre |
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Eugene Borden as Dr. Ejoute (uncredited) |
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George Calliga as Club Member (uncredited) |
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Harry Carter as Orderly (uncredited) |
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Bill Clark as Policeman (uncredited) |
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Arthur Dulac as French Waiter (uncredited) |
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Bess Flowers as Audience Member (uncredited) |
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Herschel Graham as Club Member (uncredited) |
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Torben Meyer as Gaston (uncredited) |
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Sol Murgi as Audience Member (uncredited) |
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George Nardelli as Detective (uncredited) |
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Franz Roehn as Police Doctor (uncredited) |
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Charles Tannen as Doctor (uncredited) |
| Directing | Kurt Neumann | Director |
| Writing | James Clavell | Screenplay |
| Production | Robert L. Lippert | Producer |
| Sound | Paul Sawtell | Original Music Composer |
| Camera | Karl Struss | Director of Photography |
| Editing | Merrill G. White | Editor |
| Production | Kurt Neumann | Producer |
| Art | Theobold Holsopple | Art Direction |
| Art | Lyle R. Wheeler | Art Direction |
| Art | Eli Benneche | Set Decoration |
| Art | Walter M. Scott | Set Decoration |
| Costume & Make-Up | Ben Nye | Makeup Artist |
| Sound | Eugene Grossman | Sound |
| Sound | Harry M. Leonard | Sound |
| Sound | Don Isaacs | Sound Editor |
| Sound | Dick Jensen | Sound Editor |
| Visual Effects | L.B. Abbott | Visual Effects |
| Costume & Make-Up | Adele Balkan | Costume Design |
| Costume & Make-Up | Helen Turpin | Hairstylist |
| Crew | James B. Gordon | Special Effects |
| Lighting | Earl Gilbert | Lighting Technician |
| Editing | Orven Schanzer | Assistant Editor |
| Sound | Bernhard Kaun | Conductor |
| Directing | Kathleen Fagan | Script Supervisor |
| Art | Wayne Fitzgerald | Title Designer |
| Crew | Clarence Marks | Dialogue Coach |
| Directing | Jack Gertsman | Assistant Director |
| Writing | George Langelaan | Short Story |
