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Tom Baker as The Doctor |
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Elisabeth Sladen as Sarah Jane Smith |
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Frederick Jaeger as Sorenson |
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Ewen Solon as Vishinsky |
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Prentis Hancock as Salamar |
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Graham Weston as De Haan |
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Louis Mahoney as Ponti |
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Michael Wisher as Morelli |
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Terence Brook as Braun |
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Tony McEwan as Baldwin |
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Haydn Wood as O'Hara |
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Melvyn Bedford as Reig |
| Writing | Louis Marks | Writer |
| Directing | David Maloney | Director |
| Production | Philip Hinchcliffe | Producer |
| Sound | Dudley Simpson | Original Music Composer |
| Writing | Robert Holmes | Script Editor |
| Art | Roger Murray-Leach | Production Design |
| Sound | Delia Derbyshire | Theme Song Performance |
| Crew | Peter Howell | Special Sound Effects |
