After the Doctor and his friends are exposed to a strange plague, Sarah becomes infected. Meanwhile, the Cybermen plan to destroy the planet of gold. Tom Baker, Elisabeth Sladen. Tyrum: Kevin Stoney.

The Doctor is enjoying a holiday in Paris, 1979,when he becomes aware of a fracture in time.

An anachronistic twelve-million-year-old human skull has been discovered by archaeologists and is now being used by Professor Fendelman in his time scanner experiments at Fetch Priory in contemporary England. The skull is actually an artifact of the Fendahl, an ancient creature that feeds on the life force of others.

Two alien seed pods are found buried in the Antarctic permafrost and the Doctor realises that they are from a Krynoid, a form of plant life that infects and transforms all animal life on planets upon which it becomes established.

The Doctor is invited to visit the planet Tigella by its leader, Zastor, who has become concerned about disputes between his people's two opposing factions, the religious Deons and the scientist Savants. The TARDIS is intercepted by the megalomaniacal xerophyte Meglos, last survivor of the planet Zolfa-Thura, and trapped in a chronic hysteresis - a time loop - but the Doctor and Romana manage to free it.

The Doctor and Adric prepare to travel to Logopolis, the City of Logic. Tom Baker, Matthew Waterhouse. Tegan: Janet Fielding. Detective: Tom Georgeson.

After a meeting in space with a group of unseen aliens the Doctor returns to Gallifrey and claims the presidency of the Time Lords. Leela meanwhile tries to work out why he is behaving out of character. At his induction, the Doctor is 'crowned' with a device giving him access to the Matrix. He then arranges for the transduction barriers around Gallifrey to be put out of action by K9. When this is done, his alien 'friends' materialise. They are telepathic invaders called Vardans.

The Doctor and Sarah arrive in London to find it has been evacuated after a sudden and mysterious appearance of dinosaurs. It turns out the dinosaurs are being brought in via a time machine to further a plan to revert London to a pre-technological level.

The TARDIS arrives in the marshes of the third moon of the planet Delta Magna. While trying to get an accurate reading on the tracer, the Doctor is shot at by Thawn and Fenner, two men from a nearby methane refinery.

The Doctor and Sarah arrive in London to find it has been evacuated after a sudden and mysterious appearance of dinosaurs. It turns out the dinosaurs are being brought in via a time machine to further a plan to revert London to a pre-technological level.

The inhabitants of the planet Skonnos have been promised by an alien Nimon that he will restore their empire to greatness if they in return provide young sacrifices and radioactive hymetusite crystals, both of which they are obtaining from the nearby planet Aneth.

After a meeting in space with a group of unseen aliens the Doctor returns to Gallifrey and claims the presidency of the Time Lords. Leela meanwhile tries to work out why he is behaving out of character. At his induction, the Doctor is 'crowned' with a device giving him access to the Matrix. He then arranges for the transduction barriers around Gallifrey to be put out of action by K9. When this is done, his alien 'friends' materialise. They are telepathic invaders called Vardans.

In "The Trial of a Time Lord," the Doctor faces death when the Time Lords place him on trial for interfering in galactic affairs. Peri: Nicola Bryant. Melanie: Bonnie Langford. The Valeyard: Michael Jayston. Katryca: Joan Sims.

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.

The newly regenerated Doctor and Amy Pond must save the world in less than 20 minutes from galactic policemen known as the Atraxi.

The Doctor and Amy travel to Britain of the future, where people live in a giant spaceship; Amy comes across the terrifying Smilers.

The Doctor and Amy meet Winston Churchill during a trip back to World War II, where they also encounter the Daleks.

Part 1. The Doctor hunts the last of the Weeping Angels through the Maze of the Dead; the mysterious River Song is back in the Doctor's life, but he doesn't know if he can trust her.

Part 2. The Doctor and his friends are forced to escape through the forest vault after they are surrounded by the Weeping Angels.

The Doctor suspects something isn't quite right with the daughters of the family that protects the streets of Venice.

The Doctor returns to Amy on the night before her first child is born.

Part 1. Scientists discover something isn't right beneath Earth's crust while drilling.

Part 2. Scientists discover something isn't right beneath Earth's crust while drilling.

Amy battles an alien in France with Vincent Van Gogh.

The Doctor investigates a mysterious staircase in a building where people can go up, but never down.

Part 1. A message on a cliff; a puzzle box that opens from the inside; the fates draw closer for the TARDIS.

Part 2. The fates draw close around the TARDIS.

Amy and Rory are trapped on a crashing space liner, and the only way The Doctor can rescue them is to save the soul of a lonely old miser. But is Kazran Sardick, the richest man in Sardicktown, beyond redemption? And what is lurking in the fogs?

Part 1. The Doctor, Amy and Rory receive a secret summons that leads them to the Oval Office in 1969. Enlisting the help of a former FBI agent and the irrepressible River Song, the Doctor promises to assist the President.

Part 2. The Doctor is locked in the perfect prison. Amy, Rory and River Song are being hunted down by the FBI. But, with the help of President Nixon and Neil Armstrong, the Doctor is able to mount a rebellion against an alien invasion.

The Doctor and Clara find themselves on a space shuttle making a suicide mission to the moon. Crash-landing on the lunar surface, they find a mining base full of corpses, vicious spider-like creatures poised to attack, and a terrible dilemma.