The Doctor investigates the disappearance of the advanced aircraft Speedbird Concorde. Peter Davison, Sarah Sutton. Hayter: Nigel Stock. Tegan: Janet Fielding. Stapley: Richard Easton. Sheard: Brian McDermott.

The Doctor learns the Captain's terrible secret. Captain: Bruce Purchase. Mentiad: Bernard Finch. Romana: Mary Tamm. Guard: Adam Kurakin.

Returning to Earth, the Doctor and Sarah (Elisabeth Sladen) are met with hostility and suspicion. Crayford: Milton Johns. Morgan: Peter Welch. Styggron: Martin Friend. Kraal: Stuart Fell.

Arriving in London at the end of the 19th Century, the Doctor and Leela make friends with a police pathologist, Professor Litefoot, and learn that hairs taken from the clothing of a dead body found floating in the Thames seem to have originated from a very large rat.

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

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.

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

The Doctor and Romana discover the war is being co-ordinated by a computer called Mentalis.

The Doctor is summoned to the Wenley Moor Research Centre after several staff members suffer nervous breakdowns. Buried deep within the underground caves they discover reptilian like monsters living there. Could they be part a subterranean alien invasion or is the secret behind these creatures something more ancient? Compiles episodes 5-8 from "Doctor Who" series 7.

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.

The Doctor successfully makes contact with an elder Silurian only for his efforts to be thwarted by a power hungry usurper and the introduction of deadly virus. Will the Doctor and Liz be able to cure the virus and stop the subterranean species' plan to wipe out humanity before it is too late? Compiles episodes 9-11 from "Doctor Who" series 7.

The Daleks construct a time machine and pursue The Doctor (William Hartnell) throughout the universe. Steven Taylor: Peter Purves. Ian: William Russell. Barbara: Jacqueline Hill.

William Hartnell. Steven Taylor: Peter Purves. Ian: William Russell. Barbara: Jacqueline Hill. Vicki: Maureen O'Brien.

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.

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.

The TARDIS is marooned onboard a 17th-century pirate ship whose crew is being attacked by a mysterious and beautiful sea creature. Becalmed and beset by cabin fever, the pirates have numerous superstitious explanations for the Siren's appearance.

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

Part 1. A solar tsunami liberates doppelgangers from their human 'originals' in a futuristic factory. Can the Doctor prevent all out civil war?

Part 2. The Doctor must convince terrified factory-workers to work with their doppelgangers to overcome a monster of their own making.

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

Every child is scared of monsters, but George's terrified pleas for help reach the Doctor. Because George's monsters are real.

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

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. Trapped in a world unlike any other he has seen, the Doctor faces the greatest challenge of his many lives. One final test. And he must face it alone. Pursued by the fearsome creature known only as the Veil, he must attempt the impossible.

The TARDIS lands in a hotel where every visitor's room contains their deepest, darkest fears. What lies in wait in the Doctor's room?

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!