Doctor Who

Season 12, Episode 9

Episode Title: The Sontaran Experiment (1)

Air Date: 1975-02-22

Overview:

The Doctor, Sarah Jane and Harry teleport to Earth to ensure the planet is safe for the survivors on board Nerva Beacon to return and reinhabit their world. A Sontaran named Styre has captured a group of humans and is conducting experiments on them to discover the human body's weaknesses, as part of the Sontaran's goal for domination of the galaxy.