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. Written by
Did You Know?
The first story shot entirely on OB videotape. This was made possible by the introduction of lightweight video cameras, first used in the previous story to be recorded, Doctor Who: Robot: Part One
(1974). See more
The Sontaran's hands show a glove with 5 fingers - Sontarans only have three fingers. See more