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Robert Horton as John Smith |
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Sebastian Cabot as Max |
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Jill St. John as Mary Harper |
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Dudley Foster as Leo |
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Clive Graham as Johns |
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George Roubicek as Karkov |
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Eric Pohlmann as Borensko |
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Eric Longworth as Boreman |
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Eleanor Summerfield as Mrs. Roberts |
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Timothy Bateson as |
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Blake Butler as |
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Warren Stanhope as |
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Martin Wyldeck as |
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Carol Cleveland as Girl |
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Carol Dilworth as |
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Anna Gilchrist as |
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Constantine Gregory as |
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Drewe Henley as Barker |
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Michael Segal as |
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Anthony Stamboulieh as |
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Alex Miller as Folk Singer |
| Directing | Roy Ward Baker | Director |
| Writing | Jimmy Sangster | Novel |
| Writing | Jimmy Sangster | Screenplay |
| Production | Harold D. Cohen | Executive Producer |
| Production | Jimmy Sangster | Producer |
| Sound | Johnny Pearson | Music |
| Crew | Arthur Grant | Cinematography |
| Editing | Spencer Reeve | Editor |
| Art | Scott MacGregor | Art Direction |
| Costume & Make-Up | Eddie Knight | Makeup Artist |
| Costume & Make-Up | Joan White | Hairstylist |
| Art | John Lageu | Assistant Art Director |
