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Шейн Риммер as John (voice) |
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Sylvia Anderson as Julie (voice) |
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Peter Dyneley as The Investigator (voice) |
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Charles Thake as Stavros Karanti |
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Peter Borg as Christoph |
| Crew | Harry Oakes | Cinematography |
| Visual Effects | Reg Hill | Modeling |
| Sound | Vic Elmes | Music |
| Writing | Sylvia Anderson | Screenplay |
| Production | Gerry Anderson | Producer |
| Directing | Gerry Anderson | Director |
| Writing | Шейн Риммер | Story |
| Editing | David Lane | Editor |
| Crew | Gerry Anderson | Creator |
| Editing | Len Walter | Editor |
| Sound | John Cameron | Music |
