S4 E1 • The Smugglers (1)

The Doctor struggles to convince Ben and Polly that the TARDIS is a time machine, as they arrive in 17th century Cornwall.

Première diffusion : 10 septembre 1966

S4 E2 • The Smugglers (2)

Ben and Polly's first trip by TARDIS takes them to the 17th-century Cornish coast, in the era of smugglers and pirates. There, the Doctor receives a clue to the location of hidden pirate treasure – making him a target for the vicious captain Pike. His interrogation is delayed when a smuggler named Jacob Kewper contacts Pike, erroneously believing him to be a fellow smuggler; when Pike learns that the local Squire is the head of a smuggling ring, he decides to impersonate a smuggler, learn the location of the smugglers' hoard, and then kill them all and acquire the goods for himself. The Doctor and Kewper manage to escape, but Kewper goes straight to the Squire with news of the hidden treasure. The Doctor and his friends have only one ally – Revenue man Josiah Blake, who has been investigating smuggling in the area but now finds that all hell is about to break loose. While Blake rides for the militia, the Doctor struggles to decipher the clue he's been given, knowing that only by locating the treasure himself can he bargain with the pirates and smugglers and prevent a battle which will inevitably result in the deaths of innocent townsfolk.

Première diffusion : 17 septembre 1966

S4 E3 • The Smugglers (3)

Ben and Polly's first trip by TARDIS takes them to the 17th-century Cornish coast, in the era of smugglers and pirates. There, the Doctor receives a clue to the location of hidden pirate treasure – making him a target for the vicious captain Pike. His interrogation is delayed when a smuggler named Jacob Kewper contacts Pike, erroneously believing him to be a fellow smuggler; when Pike learns that the local Squire is the head of a smuggling ring, he decides to impersonate a smuggler, learn the location of the smugglers' hoard, and then kill them all and acquire the goods for himself. The Doctor and Kewper manage to escape, but Kewper goes straight to the Squire with news of the hidden treasure. The Doctor and his friends have only one ally – Revenue man Josiah Blake, who has been investigating smuggling in the area but now finds that all hell is about to break loose. While Blake rides for the militia, the Doctor struggles to decipher the clue he's been given, knowing that only by locating the treasure himself can he bargain with the pirates and smugglers and prevent a battle which will inevitably result in the deaths of innocent townsfolk.

Première diffusion : 24 septembre 1966

S4 E4 • The Smugglers (4)

A battle breaks out to decide the fate of Avery's treasure.

Première diffusion : 1 octobre 1966

S4 E5 • The Tenth Planet (1)

Landing at the South Pole, the travellers find that Earth's twin planet is disrupting a space mission. The Doctor predicts that they will soon receive visitors from the new planet.

Première diffusion : 8 octobre 1966

S4 E7 • The Tenth Planet (3)

The TARDIS materialises decades in the future, in the year 1986, at Snowcap Tracking Station at the South Pole. There, an international team is struggling to bring down a shuttle which has inexplicably been drawn out of orbit – by the gravity of a tenth planet, Earth's exact mirror twin. The Doctor realises what's about to happen, but before he can deliver his warning, Snowcap is invaded by the Cybermen – natives of the planet Mondas who have slowly replaced most of their body parts with cybernetic prostheses, and who have now returned to their twin to drain the energy away from Earth. However, the Doctor and his friends soon find themselves fighting a threat closer to home – in order to save his astronaut son, the American General Cutler intends to attack Mondas with a Z-Bomb despite the danger that the radiation from the explosion will render half of Earth uninhabitable. The Doctor realises that the Cybermen have invaded Earth because Mondas is drawing away too much energy, and that their best hope is simply to stall the Cybermen until Mondas explodes of its own accord. But the energy drain is affecting the elderly Doctor's health, and when he finally returns to his TARDIS he collapses – and before Ben's and Polly's eyes, he seems to change into an entirely different person...

Première diffusion : 22 octobre 1966

S4 E6 • The Tenth Planet (2)

The TARDIS materialises decades in the future, in the year 1986, at Snowcap Tracking Station at the South Pole. There, an international team is struggling to bring down a shuttle which has inexplicably been drawn out of orbit – by the gravity of a tenth planet, Earth's exact mirror twin. The Doctor realises what's about to happen, but before he can deliver his warning, Snowcap is invaded by the Cybermen – natives of the planet Mondas who have slowly replaced most of their body parts with cybernetic prostheses, and who have now returned to their twin to drain the energy away from Earth. However, the Doctor and his friends soon find themselves fighting a threat closer to home – in order to save his astronaut son, the American General Cutler intends to attack Mondas with a Z-Bomb despite the danger that the radiation from the explosion will render half of Earth uninhabitable. The Doctor realises that the Cybermen have invaded Earth because Mondas is drawing away too much energy, and that their best hope is simply to stall the Cybermen until Mondas explodes of its own accord. But the energy drain is affecting the elderly Doctor's health, and when he finally returns to his TARDIS he collapses – and before Ben's and Polly's eyes, he seems to change into an entirely different person...

S4 E8 • The Tenth Planet (4)

The Cybermen invade the Snowcap base, killing General Cutler, but they are then defeated. Back in the TARDIS, the worn-out Doctor regenerates.

Première diffusion : 29 octobre 1966

S4 E9 • The Power of the Daleks (1)

Ben and Polly suspect that the 'new' Doctor is really an imposter. The TARDIS lands on the planet Vulcan where a murder has been committed.

Première diffusion : 5 novembre 1966

S4 E10 • The Power of the Daleks (2)

The Doctor appears to have transformed into an entirely different person, but Ben and Polly are unsure whether this strange man really is the Doctor or not. They soon have other matters to worry about, as the TARDIS takes them to a human colony on the planet Vulcan. Rebel activity is causing trouble for the colony governor, an Earth Examiner has recently been murdered, and the colony scientist Lesterson is obsessed with his experiments on an alien capsule unearthed from the mercury swamps. The Doctor takes the Examiner's place in order to investigate his murder, but soon discovers that the alien capsule is far more significant – for it contains dormant Daleks which Lesterson has woken. Lesterson believes that the Daleks are harmless robots which can be used to serve the colony, while the rebels are far more interested in the uses of the Daleks' in-built weaponry. Nobody will listen to the Doctor when he warns them that the Daleks have their own agenda – one which could result in the extermination of all human beings in the colony.

S4 E11 • The Power of the Daleks (3)

The Doctor appears to have transformed into an entirely different person, but Ben and Polly are unsure whether this strange man really is the Doctor or not. They soon have other matters to worry about, as the TARDIS takes them to a human colony on the planet Vulcan. Rebel activity is causing trouble for the colony governor, an Earth Examiner has recently been murdered, and the colony scientist Lesterson is obsessed with his experiments on an alien capsule unearthed from the mercury swamps. The Doctor takes the Examiner's place in order to investigate his murder, but soon discovers that the alien capsule is far more significant – for it contains dormant Daleks which Lesterson has woken. Lesterson believes that the Daleks are harmless robots which can be used to serve the colony, while the rebels are far more interested in the uses of the Daleks' in-built weaponry. Nobody will listen to the Doctor when he warns them that the Daleks have their own agenda – one which could result in the extermination of all human beings in the colony.

S4 E12 • The Power of the Daleks (4)

Lesterson is driven insane when he discovers that the Daleks are reproducing themselves, and are preparing to seize control of the colony.

Première diffusion : 26 novembre 1966

S4 E13 • The Power of the Daleks (5)

Bragen leads the rebellion and takes control of the colony, killing Governor Hensell. But the Daleks are also ready to make their final move.

Première diffusion : 3 décembre 1966

S4 E14 • The Power of the Daleks (6)

The Doctor appears to have transformed into an entirely different person, but Ben and Polly are unsure whether this strange man really is the Doctor or not. They soon have other matters to worry about, as the TARDIS takes them to a human colony on the planet Vulcan. Rebel activity is causing trouble for the colony governor, an Earth Examiner has recently been murdered, and the colony scientist Lesterson is obsessed with his experiments on an alien capsule unearthed from the mercury swamps. The Doctor takes the Examiner's place in order to investigate his murder, but soon discovers that the alien capsule is far more significant – for it contains dormant Daleks which Lesterson has woken. Lesterson believes that the Daleks are harmless robots which can be used to serve the colony, while the rebels are far more interested in the uses of the Daleks' in-built weaponry. Nobody will listen to the Doctor when he warns them that the Daleks have their own agenda – one which could result in the extermination of all human beings in the colony.

Première diffusion : 10 décembre 1966

S4 E15 • The Highlanders (1)

The TARDIS materialises on Culloden Moor just after the rout of the Jacobite rebels in 1745. The British army is mopping up survivors, and when they find the Doctor and Ben in the company of rebels they are accused of desertion and arrested. They are saved from execution by Solicitor Grey, the Commissioner of Prisons – but he has his own agenda for the prisoners. Imprisoned in Inverness, the Doctor realises that Grey is running a scam of his own, removing rebels from the prisons with the promise that they will be saved from execution if they sign contracts binding them to service in the Jamaican plantations. In short, he's a slave trader. While the Doctor and Ben try to find a way to escape and help their new friends, Polly and Kirsty MacLaren, whose father has been kidnapped by Grey, blackmail an English officer into helping them locate their kidnapped friends and family. The Doctor and his companions must then find their way back to the TARDIS through a battlefield, and the young Highland piper who helps them, Jamie McCrimmon, accompanies them on their travels.

S4 E16 • The Highlanders (2)

Polly and Kirsty attempt to blackmail Ffinch.

Première diffusion : 24 décembre 1966

S4 E17 • The Highlanders (3)

The TARDIS materialises on Culloden Moor just after the rout of the Jacobite rebels in 1745. The British army is mopping up survivors, and when they find the Doctor and Ben in the company of rebels they are accused of desertion and arrested. They are saved from execution by Solicitor Grey, the Commissioner of Prisons – but he has his own agenda for the prisoners. Imprisoned in Inverness, the Doctor realises that Grey is running a scam of his own, removing rebels from the prisons with the promise that they will be saved from execution if they sign contracts binding them to service in the Jamaican plantations. In short, he's a slave trader. While the Doctor and Ben try to find a way to escape and help their new friends, Polly and Kirsty MacLaren, whose father has been kidnapped by Grey, blackmail an English officer into helping them locate their kidnapped friends and family. The Doctor and his companions must then find their way back to the TARDIS through a battlefield, and the young Highland piper who helps them, Jamie McCrimmon, accompanies them on their travels.

Première diffusion : 31 décembre 1966

S4 E18 • The Highlanders (4)

The Doctor makes one final desperate effort to free his friends.

Première diffusion : 7 janvier 1967

S4 E19 • The Underwater Menace (1)

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.

Première diffusion : 14 janvier 1967

S4 E21 • The Underwater Menace (3)

The Doctor hatches a dangerous plan to kidnap Professor Zaroff and encourages the Fish People to revolt against their masters and put a stop to the production of food.

Première diffusion : 28 janvier 1967

S4 E20 • The Underwater Menace (2)

The Doctor and his friends materialise on a volcanic island, where they are kidnapped by natives of an underground civilisation. To the Doctor's great surprise, these are the survivors of Atlantis – and the famous Professor Zaroff, thought to have died twenty years ago, is amongst them. Zaroff has provided the Atlanteans with a new source of food, has taught them how to surgically convert their slave caste into Fish People who can survive underwater, and has promised to raise Atlantis from the waves. Only the Doctor realises that Zaroff is mad, and that his "plan" to raise Atlantis will in fact result in the destruction of the Earth.

S4 E22 • The Underwater Menace (4)

The Doctor and his friends materialise on a volcanic island, where they are kidnapped by natives of an underground civilisation. To the Doctor's great surprise, these are the survivors of Atlantis – and the famous Professor Zaroff, thought to have died twenty years ago, is amongst them. Zaroff has provided the Atlanteans with a new source of food, has taught them how to surgically convert their slave caste into Fish People who can survive underwater, and has promised to raise Atlantis from the waves. Only the Doctor realises that Zaroff is mad, and that his "plan" to raise Atlantis will in fact result in the destruction of the Earth.

Première diffusion : 4 février 1967

S4 E23 • The Moonbase (1)

The TARDIS lands on the Moon in 2070 and Jamie is injured during a spacewalk. The travellers are treated with suspicion at the weather control moonbase where a plague has struck.

Première diffusion : 11 février 1967

S4 E24 • The Moonbase (2)

Trying to take his companions to Mars, the Doctor instead ends up on the Moon in the year 2070. Earth's weather is controlled by means of gravity waves directed from an internationally-run Moonbase, but the staff of the Moonbase are suffering from a mysterious outbreak of plague, and moments after the Doctor and his friends enter the entire Moonbase is placed under quarantine. The Doctor offers to help find a cure for the plague, which he suspects is no plague at all – and he's right. The base's food supplies have in fact been poisoned by Cybermen from the colony world Telos, who intend to seize control of the Graviton and use it to destroy the Earth – not as revenge for the destruction of Mondas, but simply and logically to eliminate a potential threat.

Première diffusion : 18 février 1967

S4 E25 • The Moonbase (3)

The Cybermen have taken control of the moonbase and are preparing to use the weather control systems to wreak havoc on Earth.

Première diffusion : 25 février 1967

S4 E26 • The Moonbase (4)

Trying to take his companions to Mars, the Doctor instead ends up on the Moon in the year 2070. Earth's weather is controlled by means of gravity waves directed from an internationally-run Moonbase, but the staff of the Moonbase are suffering from a mysterious outbreak of plague, and moments after the Doctor and his friends enter the entire Moonbase is placed under quarantine. The Doctor offers to help find a cure for the plague, which he suspects is no plague at all – and he's right. The base's food supplies have in fact been poisoned by Cybermen from the colony world Telos, who intend to seize control of the Graviton and use it to destroy the Earth – not as revenge for the destruction of Mondas, but simply and logically to eliminate a potential threat.

Première diffusion : 4 mars 1967

S4 E27 • The Macra Terror (1)

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.

Première diffusion : 11 mars 1967

S4 E28 • The Macra Terror (2)

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.

Première diffusion : 18 mars 1967

S4 E29 • The Macra Terror (3)

The TARDIS materialises in a human colony which is run like a giant holiday camp, where everybody is happy all round and fun and games are the order of the day. But a madman named Medok claims that the camp is stalked at night by hideous monsters, and as the Doctor learns more about the camp he realises that the people here risk their lives daily to mine a dangerously toxic natural gas – and yet nobody knows what it's for. His investigation attempt hits a snag when Ben is brainwashed by the colony's subliminal conditioning, and turns in his friends for acting against colony interests. In fact, the colony is under the control of the Macra, giant crab-like insects who are using the brainwashed humans to mine the gas they need to survive. It's up to the Doctor and his friends to prove the truth and free the colonists from a slavery they don't even know they're suffering.

Première diffusion : 25 mars 1967

S4 E30 • The Macra Terror (4)

The Doctor and Polly manage to save Jamie from the Macra, but can they convince the Pilot on who is really in charge of the colony?

Première diffusion : 1 avril 1967

S4 E32 • The Faceless Ones (2)

The TARDIS materialises on a runway at Gatwick Airport, and when the Doctor and his friends scatter to avoid policemen, Polly witnesses a murder in an airplane hangar. She tells the Doctor, but is then kidnapped – and reappears shortly afterwards, bearing a passport from Zurich and claiming to have no idea who the Doctor is. Jamie meets a young woman named Samantha who's looking for her missing brother, and when a detective from Scotland Yard shows up looking for his missing colleague, the airport Commandant is forced to concede that something very odd is going on. The Doctor soon discovers that "Chameleon Tours", ostensibly offering cheap package tours for students and hitch-hiking youths, is in fact a front for a massive kidnapping operation. The alien Chameleons, who lost their personal identities in a cosmic accident, intend to steal the identities of the thousands of kidnapped youths, and the Doctor and his friends must stop them. When the situation is resolved, Ben and Polly discover that this is the very day on which they began travelling with the First Doctor, and choose to remain in London.

Première diffusion : 15 avril 1967

S4 E31 • The Faceless Ones (1)

The TARDIS materialises on a runway at Gatwick Airport, and when the Doctor and his friends scatter to avoid policemen, Polly witnesses a murder in an airplane hangar. She tells the Doctor, but is then kidnapped – and reappears shortly afterwards, bearing a passport from Zurich and claiming to have no idea who the Doctor is. Jamie meets a young woman named Samantha who's looking for her missing brother, and when a detective from Scotland Yard shows up looking for his missing colleague, the airport Commandant is forced to concede that something very odd is going on. The Doctor soon discovers that "Chameleon Tours", ostensibly offering cheap package tours for students and hitch-hiking youths, is in fact a front for a massive kidnapping operation. The alien Chameleons, who lost their personal identities in a cosmic accident, intend to steal the identities of the thousands of kidnapped youths, and the Doctor and his friends must stop them. When the situation is resolved, Ben and Polly discover that this is the very day on which they began travelling with the First Doctor, and choose to remain in London.

S4 E33 • The Faceless Ones (3)

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

Première diffusion : 22 avril 1967

S4 E34 • The Faceless Ones (4)

The TARDIS materialises on a runway at Gatwick Airport, and when the Doctor and his friends scatter to avoid policemen, Polly witnesses a murder in an airplane hangar. She tells the Doctor, but is then kidnapped – and reappears shortly afterwards, bearing a passport from Zurich and claiming to have no idea who the Doctor is. Jamie meets a young woman named Samantha who's looking for her missing brother, and when a detective from Scotland Yard shows up looking for his missing colleague, the airport Commandant is forced to concede that something very odd is going on. The Doctor soon discovers that "Chameleon Tours", ostensibly offering cheap package tours for students and hitch-hiking youths, is in fact a front for a massive kidnapping operation. The alien Chameleons, who lost their personal identities in a cosmic accident, intend to steal the identities of the thousands of kidnapped youths, and the Doctor and his friends must stop them. When the situation is resolved, Ben and Polly discover that this is the very day on which they began travelling with the First Doctor, and choose to remain in London.

S4 E35 • The Faceless Ones (5)

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

Première diffusion : 6 mai 1967

S4 E36 • The Faceless Ones (6)

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.

Première diffusion : 13 mai 1967

S4 E37 • The Evil of the Daleks (1)

The TARDIS is stolen from Gatwick Airport, and when the Doctor and Jamie investigate they stumble into a trap set by Edward Waterfield, a time-traveller from the year 1866. His daughter Victoria has been kidnapped by the Daleks, in order to force him to lure the Doctor into their clutches. The Daleks have realised that human beings possess unique qualities which have enabled them to defeat the Daleks on every occasion the two races have fought; thus, the Daleks order the Doctor to monitor Jamie while he attempts to rescue Victoria, and synthesise the elusive Human Factor, which they intend to add to their own genetic makeup. The Doctor does so, and as he'd hoped, the test Daleks imbued with the Human Factor become playful and friendly. However, the Dalek Emperor then reveals that his real intention was to isolate the Dalek Factor and force the Doctor to spread it to the rest of humanity. The Emperor's plan fails, however, as the Doctor is not human and the Dalek Factor has no effect on him. The Doctor therefore tricks the Emperor into administring the Human Factor to several more Daleks, who begin to question authority and rebel against the Emperor. Waterfield dies saving the Doctor's life, and the Doctor and Jamie take Victoria with them as they depart, leaving the Dalek factions to fight each other to the death.

Première diffusion : 20 mai 1967

S4 E38 • The Evil of the Daleks (2)

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

Première diffusion : 27 mai 1967

S4 E40 • The Evil of the Daleks (4)

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

Première diffusion : 10 juin 1967

S4 E39 • The Evil of the Daleks (3)

The TARDIS is stolen from Gatwick Airport, and when the Doctor and Jamie investigate they stumble into a trap set by Edward Waterfield, a time-traveller from the year 1866. His daughter Victoria has been kidnapped by the Daleks, in order to force him to lure the Doctor into their clutches. The Daleks have realised that human beings possess unique qualities which have enabled them to defeat the Daleks on every occasion the two races have fought; thus, the Daleks order the Doctor to monitor Jamie while he attempts to rescue Victoria, and synthesise the elusive Human Factor, which they intend to add to their own genetic makeup. The Doctor does so, and as he'd hoped, the test Daleks imbued with the Human Factor become playful and friendly. However, the Dalek Emperor then reveals that his real intention was to isolate the Dalek Factor and force the Doctor to spread it to the rest of humanity. The Emperor's plan fails, however, as the Doctor is not human and the Dalek Factor has no effect on him. The Doctor therefore tricks the Emperor into administring the Human Factor to several more Daleks, who begin to question authority and rebel against the Emperor. Waterfield dies saving the Doctor's life, and the Doctor and Jamie take Victoria with them as they depart, leaving the Dalek factions to fight each other to the death.

S4 E41 • The Evil of the Daleks (5)

The TARDIS is stolen from Gatwick Airport, and when the Doctor and Jamie investigate they stumble into a trap set by Edward Waterfield, a time-traveller from the year 1866. His daughter Victoria has been kidnapped by the Daleks, in order to force him to lure the Doctor into their clutches. The Daleks have realised that human beings possess unique qualities which have enabled them to defeat the Daleks on every occasion the two races have fought; thus, the Daleks order the Doctor to monitor Jamie while he attempts to rescue Victoria, and synthesise the elusive Human Factor, which they intend to add to their own genetic makeup. The Doctor does so, and as he'd hoped, the test Daleks imbued with the Human Factor become playful and friendly. However, the Dalek Emperor then reveals that his real intention was to isolate the Dalek Factor and force the Doctor to spread it to the rest of humanity. The Emperor's plan fails, however, as the Doctor is not human and the Dalek Factor has no effect on him. The Doctor therefore tricks the Emperor into administring the Human Factor to several more Daleks, who begin to question authority and rebel against the Emperor. Waterfield dies saving the Doctor's life, and the Doctor and Jamie take Victoria with them as they depart, leaving the Dalek factions to fight each other to the death.

S4 E42 • The Evil of the Daleks (6)

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

Première diffusion : 24 juin 1967

S4 E43 • The Evil of the Daleks (7)

The TARDIS is stolen from Gatwick Airport, and when the Doctor and Jamie investigate they stumble into a trap set by Edward Waterfield, a time-traveller from the year 1866. His daughter Victoria has been kidnapped by the Daleks, in order to force him to lure the Doctor into their clutches. The Daleks have realised that human beings possess unique qualities which have enabled them to defeat the Daleks on every occasion the two races have fought; thus, the Daleks order the Doctor to monitor Jamie while he attempts to rescue Victoria, and synthesise the elusive Human Factor, which they intend to add to their own genetic makeup. The Doctor does so, and as he'd hoped, the test Daleks imbued with the Human Factor become playful and friendly. However, the Dalek Emperor then reveals that his real intention was to isolate the Dalek Factor and force the Doctor to spread it to the rest of humanity. The Emperor's plan fails, however, as the Doctor is not human and the Dalek Factor has no effect on him. The Doctor therefore tricks the Emperor into administring the Human Factor to several more Daleks, who begin to question authority and rebel against the Emperor. Waterfield dies saving the Doctor's life, and the Doctor and Jamie take Victoria with them as they depart, leaving the Dalek factions to fight each other to the death.

Première diffusion : 1 juillet 1967