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Richard Roundtree as Dick Shannon |
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Chuck Connors as Kesten |
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Marie-José Nat as Laure |
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Ray Milland as Ambassador |
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Broderick Crawford as Frank Dunniger |
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Max von Sydow as Gorenko |
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David Bauer as Kadish |
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Larry Cross as Gamble |
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David Healy as Phelan |
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Karl Held as Rylands |
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Sarah Marshall as Miss Harding |
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Dee Pollock as Stacey |
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Leila Buheiry as Leila |
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Gail Clymer as Switchboard Operator |
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Edmond Hannania as First Man in Black |
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Saladin Nader as Roget |
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Dean Turner as Clem Gelber |
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David Parker as |
| Directing | Gordon Hessler | Director |
| Sound | Jonathan Hodge | Original Music Composer |
| Camera | Raoul Coutard | Director of Photography |
| Writing | William Fairchild | Screenplay |
| Art | Klary Confalonieri | Set Decoration |
| Art | Maurice Labaye Fanykovy | Art Direction |
| Editing | Willy Kemplen | Editor |
| Costume & Make-Up | Colin Garde | Makeup Artist |
| Writing | Stephen Coulter | Novel |
| Production | Mel Ferrer | Producer |
| Art | John Howell | Production Design |
| Directing | Frank Ernst | Assistant Director |
| Sound | John Poyner | Sound Editor |
| Camera | Jean Garcenot | Assistant Camera |
| Camera | Georges Liron | Camera Operator |
