The Doctor and his latest companion Leela travel to a desolate mining planet, where the the human miners are being murdered one by one.

The Doctor and Romana receive a distress signal and arrive on Chloris, a lush and verdant world that has only small quantities of metals, all of which are controlled by its ruler, Lady Adrasta. Adrasta keeps order with the aid of her Huntsman and his wolfweeds - mobile balls of vegetation - while a band of scruffy thieves, led by Torvin, organize raids on her palace to steal whatever metal they can.

The Doctor wants the jethrik, and neither the Ribans nor Vynda-K's men are going to stop him. Vynda-K: Paul Seed. Romana: Mary Tamm. Garron: Iain Cuthbertson. Unstoffe: Nigel Plaskitt. Binro: Timothy Bateson.

The tracer brings the TARDIS to the planet Tara. Romana is taken prisoner by Count Grendel.

The Doctor is summoned to the Gallifrey only to find his home planet in the grips of a dangerous crisis following the assassination of the Time Lord President.

The Doctor and Romana encounter a spaceship carrying sacrifices to the Minotaur-like Nimon. Tom Baker, Lalla Ward. Pilot: Bob Hornery. Teka: Janet Ellis.

The Doctor matches wits with a mind-controlling machine that contains an evil alien parasite. Jo: Katy Manning. The Master: Roger Delgado. Brigadier: Nicholas Courtney.

The Doctor matches wits with a mind-controlling machine that contains an evil alien parasite. Jo: Katy Manning. The Master: Roger Delgado. Brigadier: Nicholas Courtney.

The Doctor works against time to save the Manussians from the power of the Mara. Peter Davison. Tegan: Janet Fielding. Lon: Martin Clunes. Tanha: Colette O'Neil. Dojjen: Preston Lockwood.

The Doctor meets the most important woman of his life.

In Wales, items include a "Dr. Who" script and pottery.

Agatha Christie's 10-day disappearance in 1926 may have been the result of amnesia, a nervous breakdown, or a giant alien wasp.

Part 1. The Doctor and Donna must uncover the truth behind the Nodes and the Data Ghost to uncover the library's secret.

Part 2 . As the shadows rise, the Doctor forges an alliance with the mysterious River Song.

The Doctor is trapped, powerless and terrified, on the planet Midnight, as a knocking on the wall begins.

Donna gets help from a mysterious blond woman.

Part 1. Earth's greatest heroes assemble to fight the New Dalek Empire, but a fearsome old enemy waits in the shadows.

Part 2. As Davros and the Daleks threaten the entire universe, the Doctor's companions join forces. However, the prophecy declares that one of them will die.

It's the Tenth Doctor's final journey - but his nemesis, The Master, has been reborn. A terrible shadow falls across the Universe as great danger approaches, and the Doctor faces the end of his life as the Master's plans hurtle out of control.