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Gig Young as Jason Kent |
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Keenan Wynn as Joe Piavi |
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Janice Rule as Susan Corvier |
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William Campbell as Danny Farber |
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Richard Anderson as Father Victor Carducci |
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Michael Chekhov as Dr. Konndorff |
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Sandro Giglio as Nick Muto |
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Edith Barrett as Mrs. Corvier |
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Porter Hall as Louie |
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Ralph Dumke as Mike Hennighan |
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Frank De Kova as The Wiry Man |
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Will Wright as The Man with a Cigar |
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Jack Raine as Dr. Surtees |
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John Call as News Vendor |
| Directing | Gerald Mayer | Director |
| Writing | Hamilton Basso | Novel |
| Writing | A.I. Bezzerides | Screenplay |
| Sound | Stanley Lambert | Sound |
| Crew | Joselyn Couret | Technical Advisor |
| Production | John Houseman | Producer |
| Costume & Make-Up | William Tuttle | Makeup Designer |
| Production | Arthur M. Loew Jr. | Associate Producer |
| Art | Arthur Lonergan | Art Direction |
| Art | Edwin B. Willis | Set Decoration |
| Sound | Alberto Colombo | Original Music Composer |
| Camera | Paul Vogel | Director of Photography |
| Art | Cedric Gibbons | Art Direction |
| Directing | Joel Freeman | Assistant Director |
| Production | Hugh Boswell | Production Manager |
| Sound | Douglas Shearer | Sound |
| Editing | Fredrick Y. Smith | Editor |
| Art | F. Keogh Gleason | Set Decoration |
| Costume & Make-Up | Sydney Guilaroff | Hairstylist |
| Crew | Warren Newcombe | Special Effects |
| Costume & Make-Up | Helen Rose | Costume Mistress |
