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Tom Baker as The Doctor |
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Elisabeth Sladen as Sarah Jane Smith |
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Stephen Thorne as Kastrian Eldrad |
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Judith Paris as Eldrad (female form) |
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Roy Pattison as Zazzka |
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Roy Skelton as King Rokon |
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Rex Robinson as Dr. Carter |
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Glyn Houston as Professor Watson |
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Frances Pidgeon as Miss Jackson |
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John Cannon as Elgin |
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David Purcell as Abbott |
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Renu Setna as Intern |
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Robin Hargrave as Guard |
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Roy Boyd as Driscoll |
| Directing | Lennie Mayne | Director |
| Writing | Bob Baker | Writer |
| Writing | Dave Martin | Writer |
| Writing | Robert Holmes | Script Editor |
| Production | Philip Hinchcliffe | Producer |
| Sound | Dudley Simpson | Original Music Composer |
| Costume & Make-Up | Barbara Lane | Costume Design |
| Art | Christine Ruscoe | Production Design |
| Crew | Max Faulkner | Stunt Coordinator |
| Camera | Max Samett | Camera Operator |
| Editing | Christopher Rowlands | Editor |
| Sound | Graham Bedwell | Sound |
| Costume & Make-Up | Judy Neame | Makeup Artist |
| Production | Marion McDougall | Production Assistant |
| Crew | Dick Mills | Special Sound Effects |
| Lighting | Derek Slee | Lighting Director |
| Sound | Brian Hiles | Sound |
| Visual Effects | Colin Mapson | Visual Effects Designer |
| Sound | Delia Derbyshire | Theme Song Performance |
