Season 4

(4 episodes)

When the TARDIS lands on a wild and remote stretch of the Cornish coast, its occupants little realise that they have arrived in the 17th Century. The Doctor, Ben and Polly soon discover to their cost that these are far from hospitable times. The local Squire is at the head of a plot to offload contraband, whilst a long-rumoured hoard of stolen treasure has drawn attention to the village church. Inadvertently stumbling upon this web of deception and double-crossing, the time travellers are rapidly propelled into danger. The Doctor's encounter with the ill-fated Joseph Londfoot leaves him with a cryptic clue to the location of Avery's Treasure. But a little knowledge can be a dangerous thing, as the fearsome pirate Samuel Pike is only too willing to prove. The Doctor realises that Pike and his bloodthirsty henchmen will stop at nothing, not even the threat of Avery's Curse, to find and seize the ill-gotten hoard. Ben and Polly, meanwhile, must choose their allies with care. It's never certain who can be trusted, and the stakes are suddenly raised as smugglers and pirates go head to head with the local militia. Can the time travellers save an entire village from burning and still escape to the TARDIS with their lives?

Written by Brian Hayles

(4 episodes)

The TARDIS lands at the South Pole in 1986. The arrival coincides with the appearance of Earth's forgotten twin planet, Mondas, along with visitors from that world — the emotionless Cybermen. It's up to the Doctor and his friends to stop the creatures before they convert Earth's population into similar cyber creations, but the encounter will have a devastating effect on the Doctor...

Written by Kit Pedler and Gerry Davis

(6 episodes)

The newly regenerated Time Lord and his companions, Polly and Ben, do battle with an old foe on the mysterious planet Vulcan. How will Polly and Ben cope with a new Doctor? How will the Doctor take to his new body? And how will they ever overcome the power of the Daleks?

Written by David Whittaker

(4 episodes)

Scotland, 1745. The Doctor, Ben and Polly arrive in Scotland after the Battle of Culloden and meet a band of Highlanders who are fleeing in defeat. Their Laird is injured and the three offer to help tend his injuries. Polly and Kirsty McLaren, the Laird's daughter, go to fetch some water but whilst they are gone the others are captured by Redcoat troops. Things become worse when the group is taken again, this time by the crooked Solicitor Grey, who is part of the West Indian slave trade. The prisoners, Ben amongst them, are bundled on board the Annabelle where the wicked Captain Trask issues dire threats of drowning. Meanwhile the Doctor is on dry land confusing all and sundry in a variety of disguises. However, his bumbling manner hides a sharp brain and eventually he, Polly and Ben are reunited in the TARDIS together with young piper Jamie McCrimmon, who went on to become one of the most popular companions of the series.

Written by Elwyn Jones and Gerry Davis

(4 episodes)

The TARDIS lands in the lost city of Atlantis, where the crazed Professor Zaroff has convinced the Atlanteans that he can raise their city from beneath the sea. But the Doctor discovers the terrible truth behind Zaroff's plan. He intends to destroy the entire planet. With the doomsday clock ticking, the Doctor and his companions must battle to prevent the apocalypse...

Written by Geoffrey Orme

(4 episodes)

In 2070 Earth's weather is being controlled with ease from the Moon. When the TARDIS arrives at the Moonbase, the Doctor, along with his friends Polly, Ben and Jamie, is accused of starting a plague that is killing off the base's crew. It's not long, however, before the time travellers discover the true cause of the deaths, a powerful, unstoppable race that the Doctor has met before: the Cybermen.

Written by Kit Pedler

(4 episodes)

When the Doctor, Polly and Ben visit a human colony that appears to be one big holiday camp they think they have come across a truly happy place. But a shadowy presence soon makes them realise that the surface contentment is carefully controlled. The colony's inhabitants have been brainwashed by giant crab-like creatures: the Macra. Insidious propaganda, broadcast by the Controller, forces the humans to mine a gas that is essential for the Macra to survive, but fatal to them. The colony must be saved, but how? The Doctor and his team are up against it, particularly when Ben falls under the influence of the Macra. Can he be rescued from their evil clutches? Can the gas pumping equipment be destroyed, getting rid of the Macra for good?

Written by Ian Stuart Black

(6 episodes)

The TARDIS makes a hazardous return to 1960s Earth, materialising on a runway at Gatwick Airport! The Doctor and his friends realise that all is not well when Polly witnesses a murder, and then both she and Ben vanish. The authorities refuse to take the matter seriously, but when Polly reappears, why does she claim not to recognise her friends? Aided by the plucky Samantha Briggs, and helped and hindered by Inspector Crossland of Scotland Yard and the airport Commandant, the Doctor and Jamie piece together a number of clues. A sequence of mysterious events seems to centre around Chameleon Tours, whose package holidays are designed to entice young people to foreign shores. Just how far-flung are the horizons they offer, and why are none of their passengers coming back? Who are the faceless ones, and what hideously deformed creatures are involved in the operations being conducted at the airport medical centre? The Doctor believes there's a connection between Chameleon Tours and the odd behaviour of key airport personnel, but in seeking to prove his theory, and rescue Ben and Polly, he becomes embroiled in a plot to steal the identities of thousands of young people.

Written by David Ellis and Malcolm Hulke

(7 episodes)

The TARDIS has been stolen from Gatwick Airport, and the Doctor and Jamie are hot on its trail. A series of cryptic clues lead them to an antiques shop owned by Edward Waterfield, and there it becomes clear that an elaborate trap has been laid for them, but by whom, and for what purpose? Only a journey back in time to the 1860s will reveal the answer... The Daleks are in search of the Human Factor, something which they believe will help their quest for universal domination. In order to achieve their aim they need the Doctor's help and the use of his TARDIS. Worried that his old friend may be turning traitor, Jamie discovers that he too is part of the plan in the course of which he encounters Victoria Waterfield, a young woman who is to play a large part in his and the Doctor's life. The Daleks' plan has far-reaching consequences, leading to conflict and destruction of astonishing proportions. And when the TARDIS arrives on the battlefield planet of Skaro, the scene is set for an encounter between the Doctor and the malevolent Emperor Dalek...

Written by David Whitaker