Season 4
43 episodes · Sep 10, 1966
This season was a season of major changes for Doctor Who, including some that have influenced the series and franchise ever since. Most notably, season 4 saw William Hartnell's First Doctor hand off the baton to Patrick Troughton's Second Doctor in the very first regeneration. When Hartnell announced his plans to leave the series, the show's writers came up with the idea of having the Doctor change his appearance and personality. In 1966, while it was not uncommon for actors to change in ongoing TV and film roles, this was possibly the first time a change in appearance was written into the very nature of the character.
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S4E1The Smugglers (1)
Sep 10, 196625mThe Doctor discovers Polly and Ben aboard the TARDIS shortly before the ship arrives in 17th century Cornwall, where the local churchwarden gives the Doctor a cryptic message shortly before being murdered.
S4E2The Smugglers (2)
Sep 17, 196625mPike is convinced that the Doctor knows the location of Avery's treasure while Polly and Ben try to convince the locals they were not responsible for Longfoot's murder.
S4E3The Smugglers (3)
Sep 24, 196625mPolly and Ben are placed in the custody of Blake, who reveals he also has his suspicions about the Squire, while the Doctor and Kewper are forced to team up to escape from Pike's ship.
S4E4The Smugglers (4)
Oct 1, 196625mThe Doctor and his friends are at the mercy of Cherub, who is now seeking Avery's treasure for himself, while Pike prepares to attack the village.
S4E5The Tenth Planet (1)
Oct 8, 196623mIn 1986 a new planet appears in the Solar System which turns out to be a long-lost twin of Earth's named Mondas. Its inhabitants are the Cybermen.
S4E6The Tenth Planet (2)
Oct 15, 196623mThe Doctor's warnings are ignored and the Cybermen take over the base, hampering the crew's efforts to help Zeus IV.
S4E7The Tenth Planet (3)
Oct 22, 196624mWith the Doctor out of action, it is up to Polly, Ben and Barclay to stop Cutler using the Z-Bomb and devastating half the world.
S4E8The Tenth Planet (4)
Oct 29, 196625mThe Cybermen take over the base again, apparently to stop the humans using the Z-Bomb, but then the Doctor realises they intend to use it themselves to destroy Earth.
S4E9The Power of the Daleks (1)
Nov 5, 196625mThe TARDIS arrives on the Earth colony of Vulcan where the newly-regenerated Doctor assumes the identity of an Earth Examiner.
S4E10The Power of the Daleks (2)
Nov 12, 196625mWhile the Doctor worries about the inert Daleks in the capsules, Lesterson makes plan to reactivate one of them.
S4E11The Power of the Daleks (3)
Nov 19, 196625mThe Doctor fails to convince the colonists of the danger posed by the Daleks and soon the other two are also reactivated.
S4E12The Power of the Daleks (4)
Nov 26, 196625mWith Polly being held prisoner by the rebels, the Doctor and Ben decide to investigate them, while Lesterson discovers the Daleks are reproducing.
S4E13The Power of the Daleks (5)
Dec 3, 196625mThe Doctor and Quinn attempt to escape in order to stop Bragen using the Daleks to take over the colony.
S4E14The Power of the Daleks (6)
Dec 10, 196625mWith Bragen having taken over, the Daleks trick the rebels into turning them loose and only the Doctor can stop them wiping out the entire colony.
S4E15The Highlanders (1)
Dec 17, 196625mThe Doctor, Polly and Ben arrive in 1746, in the aftermath of the Battle of Culloden, and are captured by a group of Highlanders shortly before they themselves are captured by redcoats.
S4E16The Highlanders (2)
Dec 24, 196625mPolly and Kirsty capture Lieutenant Ffinch to try and enlist his help while the Doctor tricks Grey in order to escape.
- S4E17
The Highlanders (3)
Dec 31, 196625mWith the Highlanders imprisoned aboard Trask's ship, the Doctor attempts to expose Grey's plan.
S4E18The Highlanders (4)
Jan 7, 196725mBen manages to join up with the Doctor, Polly and Kirsty and together they work to free the Highlanders from Trask's ship before Grey sells them into slavery.
S4E19The Underwater Menace (1)
Jan 14, 196725mThe TARDIS materialises on a deserted beach where the Doctor and his friends are captured by primitive warriors and taken to the fabled city of Atlantis.
S4E20The Underwater Menace (2)
Jan 21, 196725mWhile Ara tries to save Polly from being turned into a Fish Person and Ben and Jamie try to escape from the mines, the Doctor discovers the full extent of Zaroff's plans.
S4E21The Underwater Menace (3)
Jan 28, 196724mThe Doctor and Ramo are sentenced to be sacrificed to the goddess Amdo and must escape to put a stop to Zaroff's plan.
S4E22The Underwater Menace (4)
Feb 4, 196725mWith Zaroff's plan nearing completion, the Doctor and Ben realise the only way to save the world is to destroy Atlantis.
S4E23The Moonbase (1)
Feb 11, 196725mThe TARDIS arrives on the Moon in the year 2070.When Jamie is injured, the other travellers are forced to seek the help of a moonbase afflicted with a space plague.
S4E24The Moonbase (2)
Feb 18, 196725mThe Doctor and his friends attempt to convince the Moonbase crew that the Cybermen are responsible for the disappearances and find a cure for the plague.
S4E25The Moonbase (3)
Feb 25, 196725mThe Cybermen take over the Moonbase and begin using the Gravitron to attack Earth but Polly, Ben and Jamie come up with a way to fight back.
S4E26The Moonbase (4)
Mar 4, 196725mWith the Cybermen preparing to launch a full attack, the Doctor and his friends must keep the Moonbase and the Gravitron out of their hands until help arrives from Earth.
S4E27The Macra Terror (1)
Mar 11, 196725mThe TARDIS arrives at a holiday camp company with the crew worried by a prediction of giant crabs and the Doctor becomes interested in the apparent madman Medok's stories of creatures that roam the colony at night.
S4E28The Macra Terror (2)
Mar 18, 196725mThe Doctor is unable to convince the colonists that the Macra exist and an attempt to brainwash his companions results in Ben betraying his friends.
S4E29The Macra Terror (3)
Mar 25, 196725mThe Doctor, Polly and Jamie are sentenced to work in the pits and an escape attempt sees Ben's loyalties called into question again.
S4E30The Macra Terror (4)
Apr 1, 196725mThe Doctor and Polly manage to save Jamie from the Macra and then try to show the Pilot who is really in charge of the colony.
S4E31The Faceless Ones (1)
Apr 8, 196725mThe TARDIS materialises on the runway of Gatwick Airport, where Polly witnesses a murder only to be kidnapped before she can report it.
S4E32The Faceless Ones (2)
Apr 15, 196725mWith Polly having apparently forgotten them, the Doctor, Ben and Jamie decide to carry out their own investigation of Chameleon Tours.
S4E33The Faceless Ones (3)
Apr 22, 196725mThe Doctor, Jamie and Sam manage to convince Crossland to trust them and he persuades the Commandant to let them continue their investigation.
S4E34The Faceless Ones (4)
Apr 29, 196725mWhen Spencer attempts to kill them, the Doctor, Jamie and Sam become convinced Chameleon Tours are hiding something and Sam decides to book a ticket on one of their flights.
S4E35The Faceless Ones (5)
May 6, 196725mJamie finds himself aboard the Chameleons' satellite and meets their Director while the Doctor forces the Chameleon Meadows to tell him the aliens' plans.
S4E36The Faceless Ones (6)
May 13, 196725mThe Doctor and Pinto are captured by the Chameleons but the Doctor manages to use their dependence on their human originals to create dissent in their ranks.
S4E37The Evil of the Daleks (1)
May 20, 196725mTrying to find the stolen TARDIS, the Second Doctor and Jamie are lured into a trap by the Doctor's old enemies the Daleks.
S4E38The Evil of the Daleks (2)
May 27, 196725mThe Doctor and Jamie investigate Waterfield's antiques shop, where they are knocked unconscious and transported back to the 19th century.
S4E39The Evil of the Daleks (3)
Jun 3, 196725mAs part of the Daleks' experiment, the Doctor manipulates Jamie into attempting to rescue Victoria.
S4E40The Evil of the Daleks (4)
Jun 10, 196725mJamie and Kemel team up to try and find Victoria, while the Doctor and the Daleks continue to monitor their progress.
S4E41The Evil of the Daleks (5)
Jun 17, 196725mWith the experiment at an end, the Doctor begins to suspect the key to rescuing Jamie, Victoria and Kemel from the Daleks lies with Terrall.
S4E42The Evil of the Daleks (6)
Jun 24, 196725mThe Doctor, Jamie and Waterfield follow the Daleks to Skaro, where they discover an unforeseen consequence to their experiment.
S4E43The Evil of the Daleks (7)
Jul 1, 196725mThe Daleks are poised to spread the Dalek Factor throughout the history of Earth and begin by implanting the Doctor.