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Tom Baker as The Doctor |
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Элизабет Слейден as Sarah Jane Smith |
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Ian Marter as Harry Sullivan |
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Nicholas Courtney as Brigadier Lethbridge-Stewart |
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John Levene as RSM Benton |
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John Woodnutt as Duke of Forgill / Broton |
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Keith Ashley as Zygon |
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Ronald Gough as Zygon |
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Lillias Walker as Sister Lamont |
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Angus Lennie as Angus |
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Tony Sibbald as Huckle |
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Hugh Martin as Munro |
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Robert Russell as The Caber |
| Directing | Douglas Camfield | Director |
| Writing | Robert Banks Stewart | Writer |
| Writing | Robert Holmes | Script Editor |
| Production | Philip Hinchcliffe | Producer |
| Sound | Geoffrey Burgon | Original Music Composer |
| Costume & Make-Up | Sylvia James | Makeup Artist |
| Production | George Gallaccio | Production Manager |
| Sound | Delia Derbyshire | Theme Song Performance |
