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.

A bestial sentry guards the spaceship on the alien planet.

On the planet Earth, Dr. Who and Romana (Mary Tamm) stumble upon the mystery of an ancient stone circle, a Celtic sacrificial site. Prof. Rumford: Beatrix Lehmann. Vivien Fay: Susan Engel.

Dr. Who visits the planet Karn to find that its inhabitants desire his head for the body controlled by Morbius's brain. Elisabeth Sladen.

The final segment of the Key is traced to the planet Atrios, engaged in a long war with the neighbouring Zeos. The Marshal of Atrios intends a final strike to destroy the Zeons, but the Doctor and Romana discover that Zeos is deserted and the war is being co-ordinated by a computer called Mentalis, built by one of the Doctor's old Time Lord Academy friends, Drax.

Doctor Who and Leela arrive on a future Pluto that is controlled by a company that exploits its workers.

The Doctor and Romana get a distress signal from Chloris, a world with small quantities of metals.

Doctor Who and Leela arrive on a future Pluto that is controlled by a company that exploits its workers.

The final segment of the Key is traced to the planet Atrios, engaged in a long war with the neighbouring Zeos. The Marshal of Atrios intends a final strike to destroy the Zeons, but the Doctor and Romana discover that Zeos is deserted and the war is being co-ordinated by a computer called Mentalis, built by one of the Doctor's old Time Lord Academy friends, Drax.

When the British space program loses contact with a Martian probe and subsequent rescue vessel, UNIT and the Doctor step in to help. Events take an unexpected turn when signals from the probe appear to be of extra-terrestrial origins. Compiles episodes 12-15 from "Doctor Who" series 7.

The Doctor and Romana visit the Leisure Hive on the planet Argolis, the surface of which is uninhabitable following a twenty minute nuclear war between the Argolins and their enemies the Foamasi. The Argolins themselves are now sterile. Pangol, the youngest, was created by the Tachyon Recreation Generator, a machine that runs games in the Hive.

The Doctor heads into space in search of the missing astronauts. After making contact with the aliens he learns a startling truth about their mission. Now he must rush back to earth in order to stop a potential intergalactic war before it's too late. Compiles episodes 16-18 from "Doctor Who" series 7.

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.

The Doctor and Martha are transported into danger.

Witches cast a spell on the Doctor and Martha.

The Doctor takes Martha to the planet New Earth in the future where the streets are ruled by sinister pharmacists.

Part 1. The TARDIS lands in 1930s New York, where people are disappearing from the streets.

Part 2. The Doctor forms a deadly alliance to save humanity.

Turning back the clock has consequences.

As a spaceship hurtles towards the sun, the Doctor and Martha have just 42 minutes to save the day.

The Doctor and Rose board the Tardis and visit mankind's new home but they find gruesome secrets in a luxury hospital.

The Doctor and Rose travel back to 1879, but an encounter in the Scottish Highlands with Queen Victoria and a band of warrior monks reveals a deadly trap.

The Doctor investigates a haunted London school and runs into an old friend.

Part 1. Rose discovers that her father is still alive on a parallel Earth.

Part 2. The Cybermen take control of London and start converting the populace; Jackie falls under Lumic's control; the Doctor, Rose and Mickey are reduced to fugitives.

It is 1953 and the coronation of Queen Elizabeth II is taking place, but beneath the celebrations there are rumours of monsters on the streets.

Part 1. Rose is trapped in the orbit of a black hole; something ancient beneath the planet's surface begins to awaken.

Part 2. As Rose battles the murderous Ood, the Doctor finds his every belief being challenged to the core as the Pit beckons.

A man named Elton is plunged into a world of living nightmares when he becomes obsessed with the Doctor, Rose and their mysterious blue box.

The Doctor plans to show Rose the London Olympics in 2012; a mother hides her daughter's unearthly powers.

The human race rejoices as ghosts of loved ones return home; an invasion force threatens modern day Earth.

Two mighty armies wage war across the Earth; terror emerges from beneath Torchwood Tower; the Doctor faces a dilemma.

No sooner has the Doctor said a tear-stained farewell to Rose Tyler than he finds himself face-to-face with a woman dressed in a fluffy white wedding frock. Who is she? Who is she supposed to be marrying? And how did she get on board the TARDIS?

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

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

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.

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.

By following a Time Lord distress signal, the Doctor puts Amy, Rory and his beloved TARDIS in grave danger.

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?

Christmas Eve 1892 and a chilling menace threatens humankind - but with the Doctor in mourning, it takes old friends and an unorthodox young governess to get him fighting to save the world again.

The Doctor assembles an army to face the Battle of Demons Run - and River Song has something to tell him.

The TARDIS crash lands in 1930's Berlin, bringing the Doctor face to face with the greatest war criminal in the Universe. And Hitler.

Amy is trapped in a quarantine facility for victims of an alien plague. Can Rory save her before she is killed by kindness?

The Doctor's final days are upon him - but when he drops in on an old friend, the Cybermen are waiting.

By the shores of Lake Silencio, in Utah, all of time and space hang in the balance - because this is the day the Doctor dies.

Kidnapped by his oldest foe, the Doctor is forced on an impossible mission - to a place even the Daleks are too terrified to enter...

An unmanned spaceship hurtles towards certain destruction - unless the Doctor can save it, and its impossible cargo... of dinosaurs!

The Doctor gets a Stetson and a gun, and finds himself the reluctant Sheriff of a Western town under siege by a relentless cyborg.

The Doctor and the Ponds puzzle an unlikely invasion of Earth, as millions of sinister black cubes fall from the sky overnight...

The Doctor's heart-breaking farewell to Amy and Rory - a race against time through the streets of Manhattan, as New York's statues come to life around them....

The Doctor's search for Clara brings him to London, where Wi-Fi is everywhere. Humanity lives in a Wi-Fi soup but something dangerous is lurking in the signals, picking off minds and imprisoning them...

On the rings of the planet Akhaten, the Festival of Offerings is in full swing. Clara meets the Queen of Years but something is stirring in the pyramid, and a sacrifice will be demanded.

The Doctor and Clara land on a submarine in 1983 as it spirals into the ocean depths with an alien creature loose. With tempers flaring and nuclear weapons on board, the whole of humanity is at stake!

The Doctor and Clara travel to the haunted Caliburn House. Within its walls, a ghost hunting Professor and a psychic search for the Witch of the Well. Her apparition appears, but is she really a ghost?

The TARDIS has crashed, Clara is lost inside, and the Doctor has 30 minutes before his ship explodes!

Something ghastly is afoot in Victorian Yorkshire, as bodies are found with their skin a waxy, glowing red.

Hedgewick's World of Wonders: the perfect theme park day out. And ground zero for a deadly silver resurrection.

The Doctor has a secret he will take to his grave. And it is discovered.

Freddie needs a new coat for a "Doctor Who" fan-club event; Ash asks Freddie and Stuart for advice on winning back his ex-girlfriend; and Ash, Violet and Penelope make a shocking discovery during a shopping excursion.

Clara is alone in Victorian London with a man she doesn't know, a dinosaur in the Thames, and a spate of deadly spontaneous combustions. The Doctor has changed. It's time you knew him.

A Dalek fleet surrounds a lone rebel ship, and only the Doctor can help them now...

When Robots threaten Sherwood forest, the Doctor must join forces with Robin Hood to stop the evil reign of the Sheriff of Nottingham.

When ghosts of past and future crowd into their lives, the Doctor and Clara are thrown into an adventure that takes them to the very end of the universe.

The Doctor turns bank robber when he attempts to break into the most dangerous bank in the Cosmos.

The terrifying Skovox Blitzer is ready to destroy all humanity - and worse, any second now, Danny Pink and the Doctor are going to meet.

The Doctor and Clara crash land on the Moon to find a world of horror: a mining base full of corpses, vicious spider-like creatures poised to attack, and a terrible dilemma.

The Doctor and Clara are on the most beautiful train in history but a deadly creature is stalking the passengers. The Doctor must race against the clock to defeat the terrifying Mummy.

Separated from the Doctor, Clara discovers a new menace from another dimension. But how do you hide when even the walls are no protection? With people to save and the Doctor trapped, Clara comes up against an enemy that exists beyond human perception.

One morning in every city and town in the world, the human race wakes up to face the most surprising invasion yet. Everywhere, in every land, a forest has grown overnight and taken back the Earth.

In the world of the Nethersphere, plans have been drawn. Missy is about to come face to face with the Doctor, and an impossible choice is looming. "Death is not an end" promises the sinister 3W but, as the Doctor and Clara discover, you might wish it was.

With Cybermen on the streets of London, old friends unite against old enemies and the Doctor takes to the air in a startling new role. Can the mighty UNIT contain Missy? As the Doctor faces his greatest challenge, sacrifices must be made.

The Twelfth Doctor makes his debut in BBC America's time-honored Doctor Who Christmas special. Peter Capaldi, Jenna Coleman and guest star Nick Frost strap in for a dangerous sleigh ride through space and time in the Steven Moffat helmed special.

Part 1. Captured by Vikings, the Doctor and Clara must help protect their village from Space Warriors from the future; the Mire. Outnumbered and outgunned their fate seems inevitable. So why is the Doctor preoccupied with a single Viking girl?

Part 2. England, 1651. The deadly Highwayman 'The Knightmare' and his sidekick stalk the dark streets of London. But when they find loot that's not of this world, they come face to face with the Doctor. Can the Doctor avoid the hangman's noose?

The Doctor and Clara, with their old friend Rigsy, find themselves in a magical alien world, hidden on a street in the heart of London. Sheltered within are some of the most fearsome creatures of the universe and Ashildr (Maisie Williams)!