The Third Doctor and Sarah Jane Smith's desperate struggle against Harrison Chase's unchecked scientific tyranny while enduring physical and psychological traps

The Doctor and Sarah are lured into a deserted quarry lane by their chauffeur, who reveals himself as an armed assailant under Chase's command. Forced from the limousine at gunpoint, …

Cornered by Scorby’s gunmen in the Antarctic library, the Doctor and Sarah face immediate execution. Chase’s cold celebration over their capture reveals his fanatical devotion to forcing the alien pod …

Hargreaves bursts into the greenhouse with dire news about the pod’s rapid growth in the annex, forcing Chase to suspend the preordained execution of the Doctor and Sarah. The moment …