Directed by
| Jean Yarbrough | ... | (as Jean Yarborough) |
Writing Credits
| John T. Neville | ... | (screen play by) (as John Thomas Neville) |
| George Bricker | ... | (original story by) |
Cast (in credits order) verified as complete
| Bela Lugosi | ... | Dr. Paul Carruthers | |
| Suzanne Kaaren | ... | Mary Heath | |
| Dave O'Brien | ... | Johnny Layton | |
| Guy Usher | ... | Henry Morton | |
| Yolande Donlan | ... | Maxine (as Yolande Mallott) | |
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Donald Kerr | ... | 'One-Shot' McGuire |
| Edmund Mortimer | ... | Martin Heath (as Edward Mortimer) | |
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Gene O'Donnell | ... | Don Morton |
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Alan Baldwin | ... | Tommy Heath |
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John Ellis | ... | Roy Heath |
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Arthur Q. Bryan | ... | Joe McGinty |
| Hal Price | ... | Chief Wilkins | |
| John Davidson | ... | Prof. Raines | |
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Billy Griffith | ... | Coroner (scenes deleted) |
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Wally Rairden | ... | Walter King (as Wally Rairdon) |
Produced by
| Jack Gallagher | ... | producer (produced by) |
| Guy V. Thayer Jr. | ... | associate producer |
Cinematography by
| Arthur Martinelli | ... | director of photography |
Editing by
| Holbrook N. Todd | ... | film editor |
Art Direction by
| Paul Palmentola | ||
Production Management
| Melville De Lay | ... | production manager |
Sound Department
| Ferrol Redd | ... | sound engineer (as Farrell Redd) |
Costume and Wardrobe Department
| Eugene Joseff | ... | costume jeweler (uncredited) |
Music Department
| David Chudnow | ... | musical director |
