6.4
100 min
An energy drain traps the Third Doctor and Sarah Jane Smith on the planet Exxilon with its hostile natives, causing the travellers to make an uneasy alliance with a Marine Space Corps expedition and a squadron of Daleks. The key to escape for all of them lies at the heart of a powerful and mysterious lost city, but only after a series of deadly traps.
| Name | Character | Team | |
|---|---|---|---|
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Jon Pertwee | The Doctor | Unowned |
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Elisabeth Sladen | Sarah Jane Smith | Unowned |
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Duncan Lamont | Dan Galloway | Unowned |
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John Abineri | Richard Railton | Unowned |
| Joy Harrison | Jill Tarrant | Unowned | |
| Julian Fox | Peter Hamilton | Unowned | |
| Neil Seiler | Commander Stewart | Unowned | |
| Arnold Yarrow | Bellal | Unowned | |
| Roy Heymann | Gotal | Unowned | |
| Mostyn Evans | High Priest | Unowned | |
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Michael Wisher | Dalek Voices | Unowned |
| John Scott Martin | Dalek | Unowned | |
| Murphy Grumbar | Dalek | Unowned | |
| Cy Town | Dalek | Unowned |