7.333
175 min
Investigating mysterious power failures and a death at an underground research centre, The Doctor discovers a colony of Silurians - prehistoric, intelligent reptiles who went into hibernation before man evolved. But now they have woken up, and they are prepared to wipe out mankind with a killer plague to get their planet back.
| Name | Character | Team | |
|---|---|---|---|
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Jon Pertwee | The Doctor | Unowned |
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Caroline John | Liz Shaw | Unowned |
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Nicholas Courtney | Brigadier Lethbridge-Stewart | Unowned |
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Fulton Mackay | Dr. Quinn | Unowned |
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Norman Jones | Major Baker | Unowned |
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Peter Miles | Dr. Lawrence | Unowned |
| Thomasine Heiner | Miss Dawson | Unowned | |
| John Newman | Spencer | Unowned | |
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Geoffrey Palmer | Masters | Unowned |
| Ian Cunningham | Dr. Meredith | Unowned | |
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Paul Darrow | Captain Hawkins | Unowned |
| Roy Branigan | Roberts | Unowned | |
| Bill Matthews | Davis | Unowned | |
| Nancie Jackson | Doris Squire | Unowned | |
| Gordon Richardson | Squire | Unowned | |
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Pat Gorman | Silurian | Unowned |
| Paul Barton | Silurian | Unowned | |
| Simon Cain | Silurian | Unowned | |
| John Churchill | Silurian | Unowned | |
| Dave Carter | Silurian | Unowned | |
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Peter Halliday | Silurian (voices) | Unowned |