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Martin Landau as John Koenig |
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Barbara Bain as Helena Russell |
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Barry Morse as Victor Bergman |
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Roy Dotrice as Commissioner Simmonds |
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Judy Geeson as Regina Kesslann |
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Philip Madoc as Commander Gorski |
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Prentis Hancock as Paul Morrow |
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Nick Tate as Captain Alan Carter |
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Zienia Merton as Sandra Benes |
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Anton Phillips as Doctor Bob Mathias |
| Production | Sylvia Anderson | Producer |
| Production | Gerry Anderson | Executive Producer |
| Directing | David Tomblin | Director |
| Sound | Ennio Morricone | Music |
| Directing | Ray Austin | Director |
| Directing | Lee H. Katzin | Director |
| Writing | George Bellak | Writer |
| Writing | Edward di Lorenzo | Writer |
| Writing | Johnny Byrne | Writer |
