Season 4

E1. The Smugglers (1)

Sep 10, 1966 · 25m

The 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.

E2. The Smugglers (2)

Sep 17, 1966 · 25m

Pike 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.

E3. The Smugglers (3)

Sep 24, 1966 · 25m

Polly 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.

E4. The Smugglers (4)

Oct 1, 1966 · 25m

The 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.

E5. The Tenth Planet (1)

Oct 8, 1966 · 23m

In 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.

E6. The Tenth Planet (2)

Oct 15, 1966 · 23m

The Doctor's warnings are ignored and the Cybermen take over the base, hampering the crew's efforts to help Zeus IV.

E7. The Tenth Planet (3)

Oct 22, 1966 · 24m

With 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.

E8. The Tenth Planet (4)

Oct 29, 1966 · 25m

The 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.

E9. The Power of the Daleks (1)

Nov 5, 1966 · 25m

The TARDIS arrives on the Earth colony of Vulcan where the newly-regenerated Doctor assumes the identity of an Earth Examiner.

E10. The Power of the Daleks (2)

Nov 12, 1966 · 25m

While the Doctor worries about the inert Daleks in the capsules, Lesterson makes plan to reactivate one of them.

E11. The Power of the Daleks (3)

Nov 19, 1966 · 25m

The Doctor fails to convince the colonists of the danger posed by the Daleks and soon the other two are also reactivated.

E12. The Power of the Daleks (4)

Nov 26, 1966 · 25m

With Polly being held prisoner by the rebels, the Doctor and Ben decide to investigate them, while Lesterson discovers the Daleks are reproducing.

E13. The Power of the Daleks (5)

Dec 3, 1966 · 25m

The Doctor and Quinn attempt to escape in order to stop Bragen using the Daleks to take over the colony.

E14. The Power of the Daleks (6)

Dec 10, 1966 · 25m

With 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.

E15. The Highlanders (1)

Dec 17, 1966 · 25m

The 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.

E16. The Highlanders (2)

Dec 24, 1966 · 25m

Polly and Kirsty capture Lieutenant Ffinch to try and enlist his help while the Doctor tricks Grey in order to escape.

E17. The Highlanders (3)

Dec 31, 1966 · 25m

With the Highlanders imprisoned aboard Trask's ship, the Doctor attempts to expose Grey's plan.

E18. The Highlanders (4)

Jan 7, 1967 · 25m

Ben 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.

E19. The Underwater Menace (1)

Jan 14, 1967 · 25m

The 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.

E20. The Underwater Menace (2)

Jan 21, 1967 · 25m

While 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.

E21. The Underwater Menace (3)

Jan 28, 1967 · 24m

The Doctor and Ramo are sentenced to be sacrificed to the goddess Amdo and must escape to put a stop to Zaroff's plan.

E22. The Underwater Menace (4)

Feb 4, 1967 · 25m

With Zaroff's plan nearing completion, the Doctor and Ben realise the only way to save the world is to destroy Atlantis.

E23. The Moonbase (1)

Feb 11, 1967 · 25m

The 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.

E24. The Moonbase (2)

Feb 18, 1967 · 25m

The 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.

E25. The Moonbase (3)

Feb 25, 1967 · 25m

The 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.

E26. The Moonbase (4)

Mar 4, 1967 · 25m

With 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.

E27. The Macra Terror (1)

Mar 11, 1967 · 25m

The 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.

E28. The Macra Terror (2)

Mar 18, 1967 · 25m

The Doctor is unable to convince the colonists that the Macra exist and an attempt to brainwash his companions results in Ben betraying his friends.

E29. The Macra Terror (3)

Mar 25, 1967 · 25m

The Doctor, Polly and Jamie are sentenced to work in the pits and an escape attempt sees Ben's loyalties called into question again.

E30. The Macra Terror (4)

Apr 1, 1967 · 25m

The 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.