Tom Baker, Elisabeth Sladen. Davros: Michael Wisher. Harry: Ian Marter.

The fourth segment of the Key to Time embroils the Doctor (Tom Baker) in a swashbuckling adventure of mistaken identity and intrigue. Romana: Mary Tamm. Count Grendel: Peter Jeffrey. Prince Reynart: Neville Jason. Zadek: Simon Lack. Voice of K9: John Leeson.

On a strange planet, Dr. Who is taken prisoner by warring tribesmen. Calib: Leslie Schofield. Leela: Louise Jameson Andor: Victor Lucas. Neeva: David Garfield.

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

The time ring takes the Doctor, Sarah and Harry back to Nerva, but to a period many thousands of years earlier than their previous visit. The station is currently acting as a beacon warning space traffic of the existence of a new asteroid orbiting Jupiter.

On Skaro, Doctor Who and Romana (Lalla Ward) encounter their archenemies---the Daleks. Tyssan: Tim Barlow. Cmdr. Sharrel: Peter Straker. Agella: Suzanne Danielle. Lan: Toby Osoba. Veldan: David Yip.

The Doctor sides with the Vardans when they invade Gallifrey. Louise Jameson. Borusa: John Arnatt. Vardan Leader: Stan McGowan. Gold Usher: Charles Morgan.

The Doctor and Leela fight the invaders on their own. Dr. Who: Tom Baker. Leela: Louise Jameson. Kelner: Milton Johns. Vardan Leader: Stan McGowan. Nesbin: Max Faulkner.

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.

The Doctor and Jo find themselves aboard a 1920s cargo ship where things are not as they seem and the ship's crew are far more dangerous than they appear. Compiles episodes 5 and 6 from "Doctor Who" series 10.

The Doctor turns bank robber when he is given a task that he cannot refuse--steal from the most dangerous bank in the cosmos.

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.

The Doctor discovers they are inside a miniscope, an alien peepshow of sorts with living miniaturized environments. Armed with this knowledge the Doctor attempts to escape and save the miniscope's inhabitants. Compiles episodes 7 and 8 from "Doctor Who" series 10.

The tracer detects the second segment on the planet Calufrax. The TARDIS makes a bumpy landing, and the Doctor and Romana soon discover that they are not on Calufrax at all. They are in fact on Zanak, a planet that has been hollowed out and fitted with engines so that it can transmat through space and materialise around others - such as Calufrax - to plunder their mineral wealth, leaving them as shrunken husks held by gravitational forces in a "trophy room".

The Doctor ensures the transfer of power on a planet known for universal harmony. Tom Baker. Keeper: Denis Cary. Kassia: Sheila Ruskin. Adric: Matthew Waterhouse.

A case of mistaken identity involves Doctor Who in intergalactic intrigue.

Madame de Pompadour finds the court at Versailles under attack by sinister clockwork killers and her only hope of salvation lies with the Doctor.

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

Fathom Events and BBC Worldwide are thrilled to bring Doctor Who: The Power of the Daleks to cinemas nationwide for an exclusive event on Monday, November 14. Thought to be lost forever, The Power of the Daleks is the missing third serial of the fourth season of Doctor Who. No complete film recordings or master negatives of The Power of the Daleks are known to have survived an archive purge in 1974. This brand new animation is recreated from original audio, photographs, and surviving film clips. The six-part adventure, presented in its entirety here as a single, feature-length event, includes the regeneration of First Doctor (William Hartnell) into Second Doctor (Patrick Troughton). The Time Lord and his companions do battle with the Daleks on the planet Vulcan. If that is not enough, the event will feature bonus content including interviews with members of the original cast! So gather your friends and join your fellow Whovians for this exclusive cinemas event, 50 years in the making!

Catch a peek of this year's Doctor Who Christmas Special!

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.

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

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

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.

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.

When terrifying events threaten Coal Hill School, the Doctor goes undercover. Skovox Blitzer is ready to destroy all humanity.