A molecular pattern of the Doctor is stolen, forcing the Time Lords to summon him to his home planet of Gallifrey. Nyssa: Sarah Sutton. President: Leonard Sachs. Tegan: Janet Fielding.

Two worlds collide when the Doctor meets Bill. A chance encounter with a girl with a star in her eye leads to a chase across time and space. Bill's mind is opened to a Universe that is bigger and more exciting than she could possibly have imagined.

The language of the future is emoji! The Doctor takes Bill to a spectacular city on a distant planet, but where are the colonists?  A band of "cute" droids hold the deadly answer.

A professor summons the power of an ancient god. Tom Baker, Elisabeth Sladen. Marcus: Bernard Archard. Ahmed: Vik Tablian. Sutekh: Gabriel Woolf. Ernie: George Tovey. Dr. Warlock: Peter Copley.

Their search for the fifth segment lands the Doctor and Romana in a dangerous swamp.

Isolating himself from Charlie, April and Tanya, a devastated Ram struggles with his new reality following the tragic events at prom. Desperately trying to hold himself together on the football field, he thinks he witnesses someone getting skinned alive.

The TARDIS lands in Renaissance Italy, where Dr. Who becomes involved with nobility, sorcery and evil. Tom Baker, Elisabeth Sladen. Count: Jon Laurimore. Rossini: Antony Carrick.

The Doctor and Romana are enjoying a holiday in Paris, 1979, when they become aware of a fracture in time. During a visit to the Louvre to see da Vinci's Mona Lisa, the Doctor purloins from a stranger, Countess Scarlioni, a bracelet that is actually an alien scanner device.

The TARDIS arrives on Fang Rock, a small island off the English coast, around the start of the 20th Century. The Doctor and Leela seek shelter at a lighthouse where the island's only inhabitants - Ben, Vince and Reuben - operate the recently-installed electric lamp to warn ships off the treacherous rocks.

The Doctor must penetrate the Citadel to save the astronauts' race.

The Daleks are using explosive charges and a group of humanoid slave workers to mine planet Skaro.

The Doctor's escape is jeopardised when the spaceship runs out of fuel.

The Earth is in danger yet again when a Nestene energy unit is stolen and then used to turn plastic made objects into deadly Autons. To make matters worse, the being controlling the Autons is none other than the Doctor's old adversary the Master. Compiles episodes 1 through 4 from "Doctor Who" series 8.

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.

On the English coast in 1066, the Doctor meets another time traveller determined to change the course of history.

The Doctor and his companions encounter space lepers headed for a cure on "Terminus." Peter Davison. Kari: Liza Goddard. Olvir: Dominic Guard. Turlough: Mark Strickson. Nyssa: Sarah Sutton.

When people start to disappear, a young woman finds cryptic messages bleeding through from a mysterious stranger called the Doctor.

Capt. Jack storms back into the Doctor's life; the Tardis travels to the end of the universe.

Part 1. Harry Saxon becomes Prime Minister, but has dark ambitions.

Part 2. With The Doctor imprisoned by The Master, Martha endeavors to save the world.

Kylie Minogue joins Doctor Who to play Astrid, a waitress on a doomed spaceship that eerily resembles the Titanic. When a meteor hits, Astrid and The Doctor must protect the survivors from and prevent the whole ship from crashing to Earth.

Donna is determined to find the Doctor, even if it means braving Miss Foster and her hordes of Adipose.

The Doctor and Donna visit Pompeii in AD 79, on the eve of the eruption of Mount Vesuvius.

The Doctor takes Donna to her first alien world, but the Ood-Sphere reveals some terrible truths about the human race.

Part 1. Sontaran warriors set their sights on the Earth and its inhabitants.

Part 2. As poison gas suffocates the Earth's population, the Doctor and UNIT team members work to eliminate the threat.

The Doctor meets the most important woman of his life.

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.

Part 1 & 2. 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.

Cornell physics professor Dr. Mukund Vengalattore joins us to talk about Dr. Who's Weeping Angels and the strange overlap of quantum reality and science fiction. Dr. Vengalattore explains to Faith and Heather that, on the quantum level time actually runs forward and backwards, and for a rare instance the scientific world becomes "very wibbly-wobbly timey-whimey".