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Stephen Boyd as Peter Churchman |
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Yvette Mimieux as Grace Harvey |
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Giovanna Ralli as Angela |
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Vito Scotti as François Morel |
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J.G. Devlin as The Tinker |
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Arnold Moss as Mr. Shanari |
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Walter Slezak as Antonio Gonzales |
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Clifton James as Philippe |
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Jay Novello as Carlos |
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Leon Askin as Morchek |
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Henry Beckman as Bendell |
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Noah Keen as The Irishman |
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Lomax Study as Colonel Brissard |
| Directing | Russell Rouse | Director |
| Writing | Ed Waters | Writer |
| Production | Clarence Greene | Producer |
| Production | Joseph E. Levine | Executive Producer |
| Camera | Harold E. Stine | Director of Photography |
| Writing | David Moessinger | Writer |
| Sound | Vic Mizzy | Original Music Composer |
| Writing | William P. McGivern | Novel |
| Editing | Chester W. Schaeffer | Editor |
| Editing | Bob Wyman | Editor |
| Art | Arthur Lonergan | Art Direction |
| Art | Hal Pereira | Art Direction |
| Costume & Make-Up | Edith Head | Costume Design |
| Costume & Make-Up | Wally Westmore | Makeup Artist |
| Costume & Make-Up | Nellie Manley | Hairstylist |
| Art | Robert R. Benton | Set Decoration |
| Art | Arthur Krams | Set Decoration |
| Directing | Daniel McCauley | Assistant Director |
| Sound | Howard Beals | Sound Effects Editor |
| Sound | Terry Kellum | Sound Recordist |
| Sound | John Wilkinson | Sound Recordist |
