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.

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BBC America online listings on 1st May indicated that this episode was no longer being shown, having been replaced by an episode of Star Trek The Next Generation instead (Cause and Effect).

The seventh season ends with the discovery of a secret the Doctor planned on taking to his grave.

The Doctor meets the most important woman of his life on the distant planet Messaline, in the middle of an endless war.

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This was originally scheduled for the 3rd May, but was replaced by the broacast of Brit Floyd: Live at Red Rocksinstead.

The Doctor makes a house call for a boy who is terrified of the monsters lurking in his bedroom cupboard.

The Doctor and his new companion, Clara, fight to save Christmas from the villainous Doctor Simeon and his army of evil snowmen.

These Doctor Who Specials run in sequence after season four of the new Doctor Who. David Tennant stars in these specials and is joined by a host of talent including David Morrisey, Dervla Kirwin, Catherine Tate and Timothy Dalton. These are the final five episodes with David Tennant as The Doctor.

As the Doctor makes his final journey to the shores of Lake Silencio in Utah, he knows only one thing can keep the universe safe - his own death. But has he reckoned without the love of a good woman?

As the Doctor makes his final journey to the shores of Lake Silencio in Utah, he knows only one thing can keep the universe safe - his own death. But has he reckoned without the love of a good woman?

Rose was just a baby in 1987 when her father was killed by a car. So the Time Lord takes her back to the year in question to the spot where the accident happened. Of course, Rose cannot stand idly by and just watch her dad die alone, so she pushes him out of the way of the on-coming car. But in doing so, she upsets the balance of time and changes history. Suddenly, Earth is under threat from the Reapers, terrifying pterodactyl-like demons that swoop out of the sky to rectify time anomalies.

The Doctor and Rose travel back to London in 1941, at the height of the Blitz. A mysterious cylinder is being guarded by the Army, while homeless children (living on the bombsites) are being terrorized by an unearthly child. Rose meets the dashing Captain Jack Harkness - has she found a hero even better than the Doctor?

The Child's plague is spreading throughout wartime London, and its zombie army is on the march. The Doctor and Rose form an alliance with intergalactic con-man Captain Jack, but find themselves trapped in the abandoned hospital. The answer lies at the bombsite, but time is running out...

The Doctor, Rose and Captain Jack have to fight for their lives on board the Game Station, but a far more dangerous threat is lurking just out of sight. The Doctor realizes that the entire human race has been blinded to the threat on its doorstep, and Armageddon is fast approaching.

The Doctor, Rose and Captain Jack have to fight for their lives on board the Game Station, but a far more dangerous threat is lurking just out of sight. The Doctor realizes that the entire human race has been blinded to the threat on its doorstep, and Armageddon is fast approaching.

The Doctor meets the most important woman of his life on the distant planet Messaline, in the middle of an endless war.

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Orginally scheduled for last weekend, but the main channel broadcast a concert instead.

The TARDIS brings the Doctor, Amy and Rory to a futuristic factory on Earth where cloned humans are tasked with dangerous jobs, and a solar event affects the status quo.

The Doctor and Martha are transported into danger.

Witches cast a spell on the Doctor and Martha.

Rose Tyler has faced danger and seen wonders alongside the Doctor, but now their friendship is put to the test as Earth plunges into an epic war. With the human race being slaughtered, the Doctor is forced into terrible action. Will the time-travellers ever be reunited?

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.

These Doctor Who Specials run in sequence after season four of the new Doctor Who. David Tennant stars in these specials and is joined by a host of talent including David Morrisey, Dervla Kirwin, Catherine Tate and Timothy Dalton. These are the final five episodes with David Tennant as The Doctor.

The Doctor urges cooperation between the factory workers and the doppelgangers to overcome a crisis of their own making.

The Doctor and Rose board the Tardis for new adventures in time and space. But when they visit mankind's new home, far in the future, they find gruesome secrets hidden inside a luxury hospital. And an enemy thought long since dead, the paper-thin Cassandra, is out for revenge...

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

Turning back the clock has consequences.

The Doctor and Rose have to protect Queen Victoria, but can anything stop the Empire of the Wolf?

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

Part 1. The Doctor finds an unusual hiding place.

These Doctor Who Specials run in sequence after season four of the new Doctor Who. David Tennant stars in these specials and is joined by a host of talent including David Morrisey, Dervla Kirwin, Catherine Tate and Timothy Dalton. These are the final five episodes with David Tennant as The Doctor.

The Doctor investigates a contemporary London school which is being haunted by strange, bat-like creatures at night. While at the school, the Doctor finds his old friend, Sarah Jane Smith, already working undercover. Both have old scores they must settle, and Rose discovers the true legacy of being a Time Lord's companion.

Part 2. Smith and Jones are under siege.

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

The 11th Doctor (Matt Smith) must save the world in 20 minutes even though the TARDIS is wrecked and his sonic screwdriver is disabled. Fortunately, he also meets Amy Pond (Karen Gillan) in the fifth-season premiere.

The Doctor finds love - and evil droids - in 18th-century France. Madame de Pompadour is being haunted by a stranger called the Doctor. Can he save her from the clockwork killers?