Sarah and the Doctor find themselves at a Space Defense Station in the English countryside. The local village seems deserted, telephones don't work, calendars are stuck on the same date and white-suited figures are wandering about aimlessly. What could possibly have happened to this seemingly quiet town?

The Doctor, Sarah and Harry arrive on a desolate and apparently deserted Earth to discover that a group of shipwrecked astronauts from a human colony, GalSec, have been lured there by a fake distress call. One of their number, Roth, tells Sarah of an alien conducting gruesome experiments on him and his crewmates. The alien turns out to be a Sontaran, Field-Major Styre, who is compiling a report on human physical and mental capabilities as a prelude to an invasion of Earth.

The Rani extracts chemicals from Victorians' brains. The Master hopes to slow the historical development of Earth by destroying the minds of many eminent scientists.

The Doctor must unravel the real purpose of the recreation generator.

The Doctor tries to avert war.

Intelligence agents around the world are under attack from alien forces. MI6 turns to the only people who can help: The Doctor and friends. As they travel the globe for answers, attacks come from all sides.

The Doctor and her friends discover that the luxury resort where they are holidaying is hiding a number of deadly secrets. What are the ferocious monsters attacking Tranquillity Spa?

On the set of "EastEnders", a celebration of the history of film, music, theatre and television; the team appraise rare and unusual items of entertainment memorabilia, including a script for the first episode of "Doctor Who."