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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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Eleanor Summerfield as Mrs. Roberts |
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Lee Montague as Igor |
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Douglas Sheldon as Alworthy |
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Robert Russell as Police Sergeant |
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Barbara Shelley as Danielle |
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Harvey Hall as |
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Donald Morley as Dunning |
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Kenneth J. Warren as Diaman |
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Philip Madoc as Gar |
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Michael Segal as |
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Timothy Bateson as |
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Douglas Blackwell as |
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Sonny Caldinez as |
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John Slavid as |
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Anthony Stamboulieh as |
| Production | Harold D. Cohen | Producer |
| Production | Jimmy Sangster | Producer |
| Writing | Jimmy Sangster | Writer |
| Sound | Johnny Pearson | Original Music Composer |
| Camera | Arthur Grant | Director of Photography |
| Editing | Spencer Reeve | Editor |
| Art | Scott MacGregor | Art Direction |
| Costume & Make-Up | Eddie Knight | Makeup Artist |
| Costume & Make-Up | Joan White | Hairstylist |
| Production | Donald Toms | Production Manager |
| Directing | Bert Batt | Assistant Director |
| Art | John Lageu | Assistant Art Director |
| Sound | Ken Barker | Sound Mixer |
| Sound | Robert T. MacPhee | Sound Recordist |
| Sound | Wilfred Thompson | Sound Editor |
| Camera | Neil Binney | Camera Operator |
| Sound | Philip Martell | Music Director |
| Directing | Valerie Booth | Continuity |
| Directing | Roy Ward Baker | Director |
| Writing | Jimmy Sangster | Novel |
