Doctor Who - Season 7 (1970) (season)
UK,
1970, 23 min
Plots(1)
UNIT are at a project run by Professor Stahlman who intends to penetrate Earth's crust. But the drilling has already released something deadly from beneath the Earth's surface. (Prime Video)
Cast
![Jon Pertwee](http://image.pmgstatic.com/cache/resized/w88h116crop/files/images/creator/photos/000/274/274742_fc6ce6.jpg)
Jon Pertwee
UK
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Nicholas Courtney
Egypt
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Ian Elliot
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