Doctor Who Season 12 Episode 9

Doctor Who → Season 12 → Episode 9: The Sontaran Experiment: Part One
The Doctor, Sarah and Harry teleports to Earth to ensure the planet is safe for the survivors on-board Nerva Beacon to return to Earth and re-inhabit their world. Only to find a Sontaran named Styre has captured a group of humans and conducting experiments on them to discover the human body's weaknesses, as part of the Sontaran's goal for domination of the galaxy.
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Watch The Sontaran Experiment: Part One
Air Date: 22 February 1975
Director: Rodney Bennett
Language: English
Runtime: 24 Minutes
More Info: IMDb

Cast: Tom Baker, Elisabeth Sladen, Ian Marter, Donald Douglas, Glyn Jones, Peter Walshe, Kevin Lindsay, Peter Rutherford, Terry Walsh


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