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Yul Brynner as Col. Alexi Vlassov |
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Henry Fonda as Alan Davies |
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Dirk Bogarde as Philip Boyle |
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Virna Lisi as Mrs. Annabel Lee |
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Robert Alda as Polygraph interrogator |
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Farley Granger as Computer Programming Director |
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Philippe Noiret as Lucien Berthon |
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Michel Bouquet as Tavel |
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Martin Held as Lepke |
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Guy Tréjan as Deval |
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Marie Dubois as Suzanne |
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Elga Andersen as Kate Cross |
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André Falcon as French Diplomat |
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William Sabatier as Mercadier |
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François Maistre as inspecteur Joss |
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Paola Pitagora as Jeannine Santelli |
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Herbert Fux as Gardener |
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Eva Maria Meineke as Mrs von Strelitz |
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Luigi Diberti as Lefèvre |
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Robert Party as Debecourt |
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Nathalie Nerval as Tatiana Vlassov |
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Jean Desailly as Narrator (voice) (uncredited) |
| Directing | Henri Verneuil | Director |
| Writing | Henri Verneuil | Screenplay |
| Costume & Make-Up | Marie-Madeleine Paris | Makeup Artist |
| Production | Jean Drouin | Unit Production Manager |
| Writing | Gilles Perrault | Screenplay |
| Writing | Pierre Nord | Novel |
| Directing | Lucile Costa | Script Supervisor |
| Costume & Make-Up | Jean-Pierre Eychenne | Makeup Artist |
| Sound | Ennio Morricone | Original Music Composer |
| Camera | Claude Renoir | Director of Photography |
| Directing | Marc Grunebaum | First Assistant Director |
| Editing | Catherine Ganz | Assistant Editor |
| Costume & Make-Up | Hélène Nourry | Costume Design |
| Camera | Charles-Henri Montel | Camera Operator |
| Camera | Vincent Rossell | Still Photographer |
| Sound | Jean Rieul | Sound |
| Production | Jean-Pierre Nossereau | Location Manager |
| Production | Henri Verneuil | Producer |
| Art | Jacques Saulnier | Production Design |
| Editing | Nadine Muse | Assistant Editor |
| Editing | Pierre Gillette | Editor |
| Production | Jacques Juranville | Production Manager |
