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Terence Morgan as Bert Foster |
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Jessica Dunning as Annika |
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Hannah Gordon as Zaylo |
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Joseph O'Conor as Freeman |
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Alan Tilvern as Blane |
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George Pastell as Maj. Khan |
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Jerry Stovin as Spaceship Captain |
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Vernon Joyner as Carter |
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Bill Treacher as Harris |
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Geoffrey Palmer as Chief Officer |
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Roy Stewart as Security Guard |
| Writing | Stanley Miller | Adaptation |
| Directing | Peter Potter | Director |
| Production | Irene Shubik | Producer |
| Writing | John Wyndham | Short Story |
| Sound | Norman Kay | Music |
| Art | Peter Seddon | Production Design |
| Costume & Make-Up | Shirley Boakes | Makeup Supervisor |
| Visual Effects | Bernard Wilkie | Visual Effects |
| Costume & Make-Up | Juanita Waterson | Costume Supervisor |
| Production | Oliver Horsbrugh | Production Assistant |
| Production | Angela Peebles | Production Secretary |
| Writing | Irene Shubik | Story Editor |
