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Lorne Greene as Peter Vanin |
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Rachel Roberts as Megan Thomas |
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Anthony Quayle as Col. Malendin |
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James Donald as Sir Martin Rolfe |
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Harry Andrews as Gen. Kirk |
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Patrick Magee as John Flack |
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Patrick Newell as Julius Bates |
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Raymond Huntley as Supt. Pode |
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Olaf Pooley as Igor Trubenoff |
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Janina Faye as Elena Vanin |
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Josephine Stuart as Elizaveta |
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Angela Pleasence as Peace Girl |
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Mary Kerridge as Lady Rolfe |
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Victor Beaumont as Karl Kronig |
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Nikki Van der Zyl as Mrs. Kronig |
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Richard Vernon as Colonel |
| Writing | John Blackburn | Novel |
| Directing | Boris Sagal | Director |
| Writing | Stanford Whitmore | Writer |
| Sound | Ron Grainer | Music |
| Editing | Archie Ludski | Editor |
| Camera | Arthur Grant | Director of Photography |
| Art | Bernard Robinson | Art Direction |
| Production | Jack Laird | Producer |
