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Gregory Peck as John Hathaway |
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Anne Heywood as Kay Hanna |
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Arthur Hill as Shelby |
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Alan Dobie as Benson |
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Keye Luke as Professor Soong Li |
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Zienia Merton as Ting Ling |
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Conrad Yama as The Chairman |
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Ori Levy as Shertov |
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Burt Kwouk as Chang Shou |
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Ric Young as Yin |
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Alan White as Gardner |
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Anthony Chinn as Chinese Officer |
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Laurence Herder as Russian Guard |
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Helen Horton as Susan Wright |
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Robert Lee as Hotel Night Manager |
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Francesca Tu as Soong Chu |
| Directing | J. Lee Thompson | Director |
| Writing | Jay Richard Kennedy | Novel |
| Writing | Ben Maddow | Screenplay |
| Sound | Jerry Goldsmith | Original Music Composer |
| Production | Arthur P. Jacobs | Executive Producer |
| Production | Joseph Lenzi | Associate Producer |
| Production | Mort Abrahams | Producer |
| Camera | John Wilcox | Director of Photography |
| Editing | Richard Best | Editor |
| Production | Weston Drury Jr. | Casting |
| Art | Peter Mullins | Art Direction |
| Costume & Make-Up | Anna Duse | Costume Design |
| Camera | Bob Kindred | Camera Operator |
| Sound | Gordon K. McCallum | Sound Recordist |
| Sound | Dudley Messenger | Sound Recordist |
| Directing | Ferdinand Fairfax | Assistant Director |
| Costume & Make-Up | Trevor Crole-Rees | Makeup Artist |
| Costume & Make-Up | Bernadette Ibbetson | Hair Designer |
