Directed by
| Richard Martin | ... | (directed by) |
Writing Credits
| Bill Strutton | ... | (written by) |
| Sydney Newman | ... | (creator) (uncredited) |
| Donald Wilson | ... | (co-creator) (uncredited) |
Cast (in credits order) verified as complete
| William Hartnell | ... | Dr. Who | |
| William Russell | ... | Ian Chesterton | |
| Jacqueline Hill | ... | Barbara Wright | |
| Maureen O'Brien | ... | Vicki | |
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Roslyn De Winter | ... | Vrestin |
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Arne Gordon | ... | Hrostar |
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Jolyon Booth | ... | Prapillus |
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Jocelyn Britton | ... | Hlynia (as Jocelyn Birdsall) |
| Martin Jarvis | ... | Hilio | |
| Ian Thompson | ... | Hetra | |
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Barbara Joss | ... | Nemini |
| Robert Jewell | ... | Zarbi | |
| Hugh Lund | ... | Zarbi | |
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Kevin Manser | ... | Zarbi |
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Jack Pitt | ... | Zarbi |
| John Scott Martin | ... | Zarbi | |
| Gerald Taylor | ... | Zarbi | |
Produced by
| Verity Lambert | ... | producer |
Editing by
| Gitta Zadek | ... | (uncredited) |
Production Design by
| John Wood | ... | designer |
Costume Design by
| Daphne Dare | ... | (costumes supervised by) (uncredited) |
Makeup Department
| Sonia Markham | ... | make-up supervised by (uncredited) |
Sound Department
| Ray Angel | ... | sound (uncredited) |
| Brian Hodgson | ... | special sound (uncredited) |
Camera and Electrical Department
| John Cura | ... | telesnap photographer (uncredited) |
| Peter Hamilton | ... | film cameraman (uncredited) |
| Ralph Walton | ... | lighting (uncredited) |
Music Department
| Ron Grainer | ... | composer: title music |
| Delia Derbyshire | ... | music arranger: title music (uncredited) |
Additional Crew
| Roslyn De Winter | ... | insect movement by |
| Dennis Spooner | ... | story editor |
| Gillian Chardet | ... | assistant floor manager (uncredited) |
| Elisabeth Dunbar | ... | assistant floor manager (uncredited) |
| Norman Stewart | ... | production assistant (uncredited) |
