Peter Moffatt

Many incarnations of the Doctors and their old companions are taken out of time and deposited in the Death Zone on Gallifrey. There, they must battle the Master, Daleks, Cybermen and Yeti in order to reach the Dark Tower and discover the Tomb of Rassilon.

In 17th century England, the Doctor and itinerant thespian Richard Mace uncover a plot by a crew of criminal Terileptils to wipe out humanity.

A warp ellipse draws the TARDIS off course. The Fifth Doctor's companions are separated from him not in space, but in time, and he has to deal with a treacherous schoolboy named Turlough. But why does the Doctor's old friend, the Brigadier, not remember him at all?

The Doctor has regenerated and all is not well. Confused, angry and acting strangely, the new Doctor decides to become a hermit, so takes his concerned companion Peri to a desolate asteroid where he plans to live for several centuries. However, the time travellers soon uncover a plot that threatens the entire galaxy. Why has an alien Gastropod kidnapped a pair of genius twins, and will the Doctor recover in time to find out?

Still trapped in E-Space, the Doctor, Romana, Adric and K9 encounter a medieval civilisation dominated by the Three Who Rule, vampires who govern from their mighty castle.

Producer Steve Broster takes a look back to 1983 and the celebration of Doctor Who's twentieth anniversary, including the production and transmission of 'The Five Doctors', the media interest and the BBC Enterprises' event at Longleat House. Featuring actors Peter Davison, Elisabeth Sladen, Nicholas Courtney, Mark Strickson, Janet Fielding, Carole Ann Ford, John Leeson, Richard Franklin and Caroline John, writer Terrance Dicks, director Peter Moffatt, visual effects designer Mike Kelt, new series writers Paul Cornell and Gareth Roberts, prominent fans Andrew Beech, Ian Levine, Richard Molesworth and James Goss. Presented by Colin Baker.

Suddenly gripped by a memory of being executed in his second incarnation, the Sixth Doctor travels to Seville to save his past self and ensure his own existence in his present.

An estate agent arranges to meet a couple for a viewing at a flat.