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Kieron Moore as Johnny Dent |
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Ina Balin as Mona Shannon |
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Keenan Wynn as Willy Gore |
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Fernando Rey as Col. Romero |
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Charles Regnier as Piet de Jonge |
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Victor Maddern as Abel Baker |
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Sancho Gracia as Wes |
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Bobby Hall as Whitey Keller |
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Mike Brendel as Turk |
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Luis Rivera as Young Lieutenant |
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Román Ariznavarreta as Ernie |
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Joe Zboran as Benny |
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Xan das Bolas as Gonzalez |
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Vicente Roca as Shipping Clerk |
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Jerzy Radlowsky as Bert |
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Charles Siegmund as Carl |
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Pedro Barbero as Peters |
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Scott Miller as Rolf |
| Sound | Johnny Douglas | Music |
| Directing | Bernard Glasser | Director |
| Writing | Myron J. Gold | Writer |
| Production | Bernard Glasser | Producer |
| Production | Tíbor Reves | Associate Producer |
| Production | Harry Spalding | Executive Producer |
| Editing | Nicholas Wentworth | Editor |
| Directing | Juan Estelrich March | Assistant Director |
| Costume & Make-Up | Inés González | Hairstylist |
| Camera | Jack Willoughby | Director of Photography |
| Sound | Maurice Askew | Sound Recordist |
| Directing | Olga Moller | Script Supervisor |
| Crew | Gwynn G. Griffis | Special Effects |
| Camera | Federico G. Larraya | Director of Photography |
| Costume & Make-Up | Adolfo Ponte | Makeup Artist |
| Art | Santiago Ontañón | Art Direction |
| Sound | Jim Hopkins | Sound Editor |
| Editing | Peter Parasheles | Supervising Editor |
| Costume & Make-Up | Agustín Cuéllar | Costume Design |
| Production | Francisco Romero | Production Manager |
