The Best Episodes of Doctor Who Season 4

The Daleks are poised to spread the Dalek Factor throughout the history of Earth and begin by implanting the Doctor.

Director: N/A

Writer: David Whitaker

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.

Director: Christopher Barry

Writer: David Whitaker

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.

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

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

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

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

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

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The Doctor and Jamie investigate Waterfield's antiques shop, where they are knocked unconscious and transported back to the 19th century.

Director: N/A

Writer: David Whitaker

The Doctor, Jamie and Waterfield follow the Daleks to Skaro, where they discover an unforeseen consequence to their experiment.

Director: N/A

Writer: David Whitaker

Trying to find the stolen TARDIS, the Second Doctor and Jamie are lured into a trap by the Doctor's old enemies the Daleks.

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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.

Director: Derek Martinus

Writer: Gerry Davis, Kit Pedler

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

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Writer: N/A

With the experiment at an end, the Doctor begins to suspect the key to rescuing Jamie, Victoria and Kemel from the Daleks lies with Terrall.

Director: N/A

Writer: David Whitaker

As part of the Daleks' experiment, the Doctor manipulates Jamie into attempting to rescue Victoria.

Director: N/A

Writer: David Whitaker

Jamie and Kemel team up to try and find Victoria, while the Doctor and the Daleks continue to monitor their progress.

Director: N/A

Writer: David Whitaker

The TARDIS materialises on the runway of Gatwick Airport, where Polly witnesses a murder only to be kidnapped before she can report it.

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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.

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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.

Director: Morris Barry

Writer: N/A

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.

Director: Morris Barry

Writer: N/A

The Doctor, Jamie and Sam manage to convince Crossland to trust them and he persuades the Commandant to let them continue their investigation.

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Writer: N/A

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.

Director: Morris Barry

Writer: N/A

With Polly having apparently forgotten them, the Doctor, Ben and Jamie decide to carry out their own investigation of Chameleon Tours.

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Writer: N/A

Jamie finds himself aboard the Chameleons' satellite and meets their Director while the Doctor forces the Chameleon Meadows to tell him the aliens' plans.

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The 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.

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