On a barren asteroid, the once-mighty Haddron Empire is on the brink of collapse, torn apart by civil war. The one man who might have saved it languishes in prison, his enemies planning his death and his friends plotting his escape.The Second Doctor arrives as the last act of this drama is being played out.

Anji has just had the worst week of her life. She should be back at her desk, not travelling through time and space in a police box. The Eighth Doctor is supposed to be taking her home, so why are there dinosaurs outside? One thing is certain: Anji is never going to complain about Monday mornings in the office again.

On a moon of the ruined planet Akoshemon, an age-old terror is about to be reborn. Something that remembers the spiral of war, pestilence and deprivation - and rejoices in it. The Fifth Doctor joins a team of archaeologists searching for evidence of the planet's infamous past, and uncovers more than just ancient history.

The Beautiful Death is the ultimate theme-park ride: a sightseeing tour of the afterlife. But something has gone wrong, and when the Fourth Doctor arrives in the aftermath of the disaster, he is congratulated for saving the population from destruction - something he hasn't actually done yet.

The aerodrome in Culverton has new owners, and they promise an era of prosperity for the idyllic village. But former Spitfire pilot Alex Whistler is suspicious - when black-shirted troops appear on the streets, he contacts his old friend Brigadier Lethbridge-Stewart at U N I T The Third Doctor is sent to investigate .

Reports of a time disturbance lead the Ninth Doctor to modern-day London, where he discovers a Neanderthal Man, twenty-eight thousand years after his race became extinct. A trip back to the dawn of humanity only deepens the mystery: who are these strange humans from the far future now living in the distant past?

Arriving on the sun-baked veldt in the middle of the Boer War, the Sixth Doctor is soon involved in the adventures of struggling politician and war correspondent Winston Churchill. Of course, he knows Churchill is destined for great things, but unseen forces seem to be interfering with Winston's historic career.

With business to attend to, the Seventh Doctor returns to where it all began: Coal Hill School in London in 1963. Last time he was here, the Doctor left something behind - a Time Lord artefact that could unlock the secrets of time travel. Can the Doctor retrieve it before two rival factions of Daleks track it down?