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?
Many of Styre's torture devices were originally medieval in nature. See more
The Sontaran's hands show a glove with 5 fingers - Sontarans only have three fingers. See more