The Twelfth Doctor (2014-2017)
Season Thirty-Four 
(2014) Season Thirty-Four (2014): Old Soldiers
First appearances of Missy, Danny Pink, Courtney Woods and Santa Claus.

Specials (2015-16): Song For A Winter's Night
First appearance of Nardole.
Special (2014) Special (2014): Visions Of Sugar Plums
Season Thirty-Six (2017): Deserts Of Vast Eternity
First appearance of Bill Potts.
Season Thirty-Six 
Thirty-Five (2015) Season Thirty-Five (2015): The Long Way
First appearance of Ashildr.
Special (2017): Twelfth Night
First appearance of the Captain.

Season Thirty-Four (2014): Old Soldiers

The Doctor
The Twelfth Doctor

Peter Capaldi played the Doctor from The Time Of The Doctor in December 2013 to Twice Upon A Time in December 2017. His incarnation was also foreshadowed with a cameo appearance in November 2013's The Day Of The Doctor. He also appeared in For Tonight We Might Die, part of Class.

Companions and Recurring Characters

A notorious troublemaker at Coal Hill School, student Courtney Woods eventually earned the reluctant Doctor's permission to take a trip aboard the TARDIS.

Ellis George played Courtney on a recurring basis from Deep Breath in August 2014 to Kill The Moon in October 2014.

Courtney Woods

After regenerating and somehow escaping from Gallifrey, the Master -- now in a female body and calling herself Missy -- continued to bedevil the Doctor.

Michelle Gomez played Missy on a recurring basis from Deep Breath in August 2014 to The Doctor Falls in July 2017.


A former soldier turned Coal Hill School maths teacher, Danny Pink fell in love with Clara Oswald, but struggled to accept the dangers inherent in her relationship with the Doctor.

Danny was played by Samuel Anderson on a recurring basis from Into The Dalek in August 2014 to Last Christmas in December 2014.

Danny Pink

Although he (perhaps) turned out to be a manifestation of the human mind's determination to defend itself, Santa Claus was instrumental in inspiring the Doctor to defeat the Dream Crabs.

Father Christmas was played by Nick Frost from Death In Heaven in November 2014 to Last Christmas in December 2014.

Santa Claus

The Production Team

With the departure of producer Marcus Wilson, former producers Peter Bennett and Nikki Wilson returned to Doctor Who to replace him. Paul Frift, who has been a producer on shows like Primeval, Crooked House and Room At The Top, also served as producer of In The Forest Of The Night.

The Stories
Deep Breath
Deep Breath by Steven Moffat, directed by Ben Wheatley
Clara and the newly-regenerated Doctor are reunited with Vastra, Jenny and Strax in Victorian London. While Clara tries to come to grips with the profound change she has just witnessed, the unstable Doctor sets off on his own to investigate a spate of murders by immolation. Soon, a mysterious message draws both time travellers to a restaurant where the patrons are not what they seem, and an ancient menace lurks below. With her life in the balance, Clara must decide whether she can still trust the man she thought was her best friend.
Into The Dalek
Into The Dalek by Phil Ford and Steven Moffat, directed by Ben Wheatley
In the midst of a warzone, the soldiers occupying Aristotle, a secret human outpost, have captured a lone Dalek. This Dalek is so damaged that it has come to view its own kind as evil, and claims it wants to help the humans exterminate the Dalek legions. When the Doctor and Clara arrive on Aristotle, they are miniaturised and sent into the body of the Dalek itself, in the hope of understanding what has happened to it. As the Doctor confronts the question of whether there can ever be such a thing as a good Dalek, he must also confront the hatred in his own heart.
Robot Of Sherwood
Robot Of Sherwood by Mark Gatiss, directed by Paul Murphy
Clara wants to meet Robin Hood, but the Doctor scoffs at the notion of seeking out someone he believes is a fictional character. However, no sooner do they land in 1190 Sherwood Forest than they encounter the legendary rogue and his Merry Men. The Doctor and Clara learn that the countryside is indeed being oppressed by the Sheriff of Nottingham, who is stealing gold and kidnapping peasants for labour. But when the Sheriff's knights are revealed to be robots and his castle turns out to be a spaceship, the Doctor becomes more convinced than ever that Robin is not what he appears.
Listen by Steven Moffat, directed by Douglas Mackinnon
Could a creature evolve that hid itself so perfectly, no one ever knew it was there? Could it be the monster under the bed, or the thing we speak to when we think we're alone? The Doctor becomes driven to answer these questions, and connects Clara to the telepathic circuits in the TARDIS in order to travel back along her timeline. But Clara is preoccupied with her disastrous first date with Danny Pink, and so the travellers instead find themselves journeying from an orphanage in the mid-1990s to a capsule stranded at the very end of time...
Time Heist
Time Heist by Steve Thompson and Steven Moffat, directed by Douglas Mackinnon
The Doctor and Clara find themselves part of a team which has been despatched on a mission to break into the intergalactic Bank of Karabraxos. But their short-term memories have been wiped, leaving them with no clue as to their goal, nor the true identity of the mysterious Architect who has brought them together. To make matters worse, not only does the Bank boast an array of sophisticated and deadly security measures, but its executive, the icy Ms Delphox, controls the Teller -- a creature with the power to detect the guilty and liquefy their brains.
The Caretaker
The Caretaker by Gareth Roberts and Steven Moffat, directed by Paul Murphy
The Doctor detects the presence of an alien war machine called the Skovox Blitzer somewhere in East London, so he poses as Coal Hill School's caretaker to investigate. This masquerade draws him deeper into Clara's personal life, and he develops a frosty relationship with an unsuspecting Danny Pink. Matters escalate when Danny inadvertently spoils the Doctor's plan to deal with the menace. Clara is faced with no choice but to reveal the truth about her adventures in the TARDIS, while time is running out before the Skovox Blitzer destroys the Earth.
Kill The Moon
Kill The Moon by Peter Harness, directed by Paul Wilmshurst
When Clara admonishes the Doctor for his treatment of Courtney Woods, he decides to take both teacher and pupil on a trip to the Moon in the year 2049. But there is a mystery afoot on the lunar surface: the gravity is wrong, the landscape is wracked by seismic activity, and spider-like monsters lurk in the shadows. In desperation, a mission from Earth led by Lundvik has arrived, determined to solve the crisis -- or destroy the Moon with an arsenal of nuclear weapons. When the Doctor refuses to become involved, Clara is faced with a terrible decision which may affect the future of the human race.
Mummy On The Orient Express
Mummy On The Orient Express by Jamie Mathieson, directed by Paul Wilmshurst
The Orient Express has been reborn as a hyperspatial passenger train. When the Doctor and Clara arrive on board, however, they soon learn that the Express is haunted by a legendary mummy called the Foretold, which appears to its victims precisely 66 seconds before it takes their life, and which nobody else can see. Soon, strange coincidences start to pile up -- such as the fact that one of the passengers happens to be an expert in alien mythology. Even as the body count rises, the Doctor begins to realise that somebody is playing a very dangerous game...
Flatline by Jamie Mathieson, directed by Douglas Mackinnon
When the TARDIS is mysteriously dragged off-course to Bristol, Clara goes investigating while the Doctor tries to figure out what's wrong with the Ship. But when something in the vicinity begins leeching its energies, the Doctor finds himself trapped within a rapidly shrinking time machine. The mystery deepens as Clara learns of a series of disappearances which have plagued the area in recent weeks. With the help of a young graffiti artist named Rigsy, she finds herself thrust into the Doctor's role, battling invading forces which quite literally hail from another dimension.
In The Forest Of The Night
In The Forest Of The Night by Frank Cottrell-Boyce, directed by Sheree Folkson
Clara and Danny are chaperoning an overnight class trip, when they awaken in the morning to discover that a forest has grown up all across London. Elsewhere in the woods the Doctor meets Maebh, one of their pupils, who seems to have a strange connection to the mysterious goings-on. Searching for Maebh brings Clara to the Doctor, and together they learn that the forest hasn't just infested London -- it's covering the entire world. With a deadly solar flare speeding towards the Earth, they must determine whether the trees are another agent of destruction... or salvation.
Dark Water / Death In Heaven
Dark Water / Death In Heaven by Steven Moffat, directed by Rachel Talalay
When Danny Pink is killed in a traffic accident, Clara demands that the Doctor do something to save him. The Doctor decides to take Clara beyond the veil of death, using the TARDIS telepathic circuits to plot a course. They materialise in the halls of an organisation called 3W, where they meet the enigmatic Missy and learn that the souls of the departed seem to have moved on to the mysterious Nethersphere. But nothing is what it seems: not the Nethersphere, nor the corpses lining 3W's corridors, nor Missy herself -- in reality a very old acquaintance of the Doctor's.

Making History

The transmission of Season Thirty-Four in 2014 marked the first time since 1989 that a full season of Doctor Who was broadcast in the autumn. In the wake of the complex story arcs which characterised the Matt Smith era, executive producer Steven Moffat embraced a looser, more character-driven umbrella storyline for Peter Capaldi's first season.

Special (2014): Visions Of Sugar Plums

The Story
Last Christmas
Last Christmas by Steven Moffat, directed by Paul Wilmshurst
The Doctor and Clara are drawn back together when a man claiming to be Santa Claus is discovered on her rooftop. Soon they find themselves at the North Pole, where a scientific research base has been attacked by Dream Crabs, which attach themselves to a person and induce a state of euphoric reverie -- all while slowly devouring their host. When Clara falls victim to the Dream Crabs and believes herself to be celebrating Christmas Day with Danny Pink, the Doctor must find a way to rescue her. But how can dreamers ever recognise that they are dreaming?

Making History

On September 19th, 2014, the BBC confirmed that production had newly begun on a Doctor Who Christmas special for 2014.

Season Thirty-Five (2015): The Long Way

Companions and Recurring Characters

Ashildr was an outcast Viking girl who became effectively immortal when she was bonded with an alien healing device. Over the centuries, her relationship with the Doctor became fractious when she began to believe that, as much as his role was to protect the world from those would do it harm, hers was to protect it from the Doctor.

Maisie Williams played Ashildr on a recurring basis from The Girl Who Died in October 2015 to Hell Bent in December 2015.


The Stories
The Magician's Apprentice / The Witch's Familiar
The Magician's Apprentice / The Witch's Familiar by Steven Moffat, directed by Hettie MacDonald
On a wartorn planet, the Doctor encounters a young boy who has fallen into a deadly trap. But when the Doctor realises that the planet is Skaro, and the child will grow up to become Davros -- creator of the Daleks -- he abandons the boy to his fate. Appalled by his own actions, a recalcitrant Doctor goes into seclusion. However, at the end of his life, Davros remembers that fateful day, and despatches his servant, Colony Sarff, to use Clara and Missy as bait to lure the Doctor to Skaro. There he plans to claim his ultimate victory: over the Doctor's very soul.
Under The Lake / Before The Flood
Under The Lake / Before The Flood by Toby Whithouse, directed by Daniel O'Hara
In 2119, the crew of an underwater base which sits near a flooded town uncovers a crashed spaceship. But an accident while exploring the vessel kills the base commander... who reappears as a hideously distorted phantom, mouthing silent words. When the TARDIS arrives, the Doctor and Clara discover that the number of ghosts haunting the base has started to climb. They realise that the murderous spectres are acting as an interstellar summons -- but the truth about them lies in the hours before the drowning of the village, with the terrible Fisher King.
The Girl Who Died
The Girl Who Died by Jamie Mathieson and Steven Moffat, directed by Ed Bazalgette
In the Middle Ages, the Doctor and Clara are captured by Vikings and taken to their village. No sooner have they arrived, however, than the village is attacked by bloodthirsty aliens called the Mire, who harvest the testosterone from warriors. A reluctant Doctor finds himself trying to prepare the outmatched Vikings for battle against the Mire, knowing full well that the situation is hopeless. The only wild card is Ashildr, an unusual Viking girl for whom destiny may have the strangest of designs...
The Woman Who Lived
The Woman Who Lived by Catherine Tregenna, directed by Ed Bazalgette
In the seventeenth century, the Doctor vies with a highwayman called the Knightmare for deadly alien technology masquerading as jewellery. But the hunt is complicated by the fact that the Knightmare is really Ashildr -- now centuries old and going by the name “Lady Me” as the memories of her original life fade with the passage of time. The Doctor must confront the ramifications of his decision to bestow immortality upon Ashildr, not the least of which is an alliance with the alien Leandro which may have devastating consequences for the Earth.
The Zygon Invasion / The Zygon Inversion
The Zygon Invasion / The Zygon Inversion by Peter Harness and Steven Moffat, directed by Daniel Nettheim
Once upon a time, the Doctor helped broker an agreement which led to the secret resettlement of twenty million Zygons to modern-day Earth. Now, however, the truce is unravelling as a splinter faction of Zygons calling itself “Truth Or Consequences” demands the right to live without taking human form. The Doctor is summoned back to Earth by Osgood just before she herself is captured by the terrorists. But even the Doctor may not suspect how advanced the shapeshifters' plans actually are, nor their success in inflitrating his circle of friends and allies...
Sleep No More
Sleep No More by Mark Gatiss, directed by Justin Molotnikov
In the 38th century, mankind has reached new heights of efficiency thanks to Morpheus, a device which compresses a full night's sleep into minutes. Morpheus is the creation of Rassmussen, a denizen of the Le Verrier space station in orbit around Neptune. When the station goes silent, a rescue team is despatched and encounters the Doctor and Clara. Soon, they are set upon by creatures made up of particulate matter whom Clara dubs Sandmen. The Doctor realises that the Sandmen are the children of the Morpheus process -- and may prove a threat to all of humanity.
Face The Raven
Face The Raven by Sarah Dollard, directed by Justin Molotnikov
Rigsy summons the Doctor and Clara for help after waking up amnesia and a supernatural tattoo on the back of his neck. Their investigations take them to a hidden street in the heart of London which serves as a refuge for aliens. Its self-styled mayor is none other than Ashildr, who keeps the peace thanks to her control of a Quantum Shade -- an unstoppable killer which manifests as an eerie raven. Rigsy stands accused of the murder of one of the street's residents, and unless the Doctor can unravel the mystery, he will be forced to face the raven.
Heaven Sent
Heaven Sent by Steven Moffat, directed by Rachel Talalay
The Doctor is transported to a mysterious castle, whose rooms revolve like gears. Outside is only the sea, its bed laden with ancient skulls. Inside, the rooms and corridors are haunted by a shrouded creature whose pursuit of the Doctor is ceaseless, and by nightmares which seem drawn from the Time Lord's own memories. As he explores the castle, the Doctor begins to uncover clues which lead him to a particular room hidden deep within the edifice. But he also starts to suspect that he is embroiled in a trap which was sprung a very long time ago...
Hell Bent
Hell Bent by Steven Moffat, directed by Rachel Talalay
Gallifrey has been returned to the universe, and the Doctor has been returned to Gallifrey. But the homecoming is anything but triumphant, as the Doctor finds himself hunted by the High Council, who demand his knowledge of the mythical destroyer known as the Hybrid. Once again accompanied by Clara -- who has been pulled out of time from the instant before her death -- the Doctor travels to the very end of the universe. There he finds Ashildr waiting for him, faces the truth about the Hybrid... and is forced to make a terrible choice.
With the Doctor having forgotten her, Clara decides to travel with Ashildr before returning to the moment of her death.

Making History

Doctor Who had enjoyed a decade of popular success since its return in 2005. By 2015, however, the television landscape was becoming ever more fragmented, as viewers increasingly turned to other means of consuming their favourite programmes. Like almost all shows, Doctor Who found its broadcast ratings dwindling, exacerbated by a later timeslot and -- with no new Doctor or companion, and removed from a milestone anniversary -- a lack of headlines-grabbing hooks to anchor the year's publicity. Despite still being one of the UK's most-watched dramas, for the first time this century the Doctor Who production team found itself defending the show against substantial allegations that it just wasn't as popular as it used to be.

Specials (2015-16): Song For A Winter's Night

Companions and Recurring Characters

A former employee of River Song's, Nardole had his head removed and joined to the robotic form of King Hydroflax. However, the Doctor restored Nardole, and invited him aboard the TARDIS as company while he recovered from the sorrow of his final parting from River.

Matt Lucas played Nardole from The Husbands Of River Song in December 2015 to The Doctor Falls in July 2017. He returned as a Testimony simulacrum in Twice Upon A Time in December 2017.


The Stories
The Husbands Of River Song
The Husbands Of River Song by Steven Moffat, directed by Douglas Mackinnon
In the year 5343, the Doctor inadvertently becomes embroiled in River Song's scheme to recover a priceless diamond which has become embedded in the brain of Hydroflax, a galactic tyrant whose disembodied head pilots a powerful robot. Not only does River appear not to recognise the Doctor, but she claims to be Hydroflax's wife -- as well as the bride of Ramone, one of her co-conspirators. The heist leads the Doctor and River to a spaceship full of the universe's vilest denizens, and a date with destiny that the Doctor has been avoiding for a very long time.
The Return Of Doctor Mysterio
The Return Of Doctor Mysterio by Steven Moffat, directed by Ed Bazalgette
The Doctor accidentally gives a young boy named Grant the powers of a comic book superhero. Despite promising that he will hide his extraordinary abilities, as an adult Grant becomes a masked vigilante known as the Ghost. He and the Doctor encounter meet again when they save investigative journalist Lucy Fletcher from the clutches of Harmony Shoal, a research and development company that's really a front for an invasion of Earth. But the brain-like creatures behind Harmony Shoal have the ability to possess the human form -- and Grant becomes their next target.
A restored Nardole now travels with the Doctor to help him overcome his grief at his final parting from River Song.

Making History

Publicity material from BBC Books revealed that there would once again be a Doctor Who Christmas special in 2015. On January 22nd, 2016, the BBC announced that there would be no new season of Doctor Who that year. Instead, only a Christmas special would be broadcast, with showrunner Steven Moffat's final season deferred to Spring 2017.

Season Thirty-Six: Deserts Of Vast Eternity

Companions and Recurring Characters

Bill Potts was a cafetaria worker at a university when she caught the Doctor's eye, becoming his protege and then his fellow traveller in time and space.

Pearl Mackie played Bill from The Pilot in April 2017 to The Doctor Falls in July 2017. She returned as a Testimony simulacrum in Twice Upon A Time in December 2017.

Bill Potts

The Stories
The Pilot
The Pilot by Steven Moffat, directed by Lawrence Gough
The Doctor and Nardole have spent years in seclusion at a university in modern-day Britain, guarding a secret vault. But despite his promise to remain hidden, the Doctor can't resist taking a bright young cafetaria worker named Bill Potts under his wing. And when Bill finds herself pursued by an entity seemingly made entirely of water, the Doctor is forced back into action -- only to discover that even the length and breadth of time and space is not enough to protect his new friend.
Despite his misgivings, the Doctor invites Bill to join him and Nardole aboard the TARDIS.
Smile by Frank Cottrell-Boyce, directed by Lawrence Gough
The Doctor takes Bill to a human colony in the far future. There they discover an empty city, where every need is satisfied by a nanobot swarm called the Vardies. Exploring further, the time travellers discover the remains of the advance team despatched to prepare the city for colonisation -- all murdered by the Vardies, who have spontaneously begun to target anybody who expresses a negative emotion. The Doctor realises that the city is a giant deathtrap which must be destroyed, but it falls to Bill to discover the real reason for the Vardy mutiny.
Thin Ice
Thin Ice by Sarah Dollard, directed by Bill Anderson
The year is 1814. The Thames has frozen for the final time, and the last of the Frost Fairs is being held upon the ice. The Doctor and Bill have barely begun to indulge in its myriad attractions when they notice eerie lights gliding below their feet. Then, chasing a young pickpocket to the edge of the Fair, they watch in horror as he is dragged down through the ice to his death. Investigating, the TARDIS crew discovers that an enormous creature lurks beneath the Thames, and they realise that the entire Frost Fair has been engineered to feed the beast.
Knock Knock
Knock Knock by Mike Bartlett, directed by Bill Anderson
Struggling to find a suitable place to live, Bill and several friends are approached by a strange old man who offers to rent them rooms in his decaying mansion. No sooner have they moved in, though, than it becomes apparent that all is not well: the wooden floors and panelling creak unnaturally, the trees sway without a hint of a breeze, mysterious insects roam the corridors... and, one by one, the roommates start to vanish. Fortunately, the Doctor has come along to help Bill unpack -- and together they uncover a mystery stretching back decades.
Oxygen by Jamie Mathieson, directed by Charles Palmer
A distress call brings the Doctor, Bill and Nardole to a space station in the far future. There they find that only four out of forty crewmembers are still alive -- but the deceased stalk its corridors, propelled by their exoskeletal spacesuits which have suddenly become murderous. To make matters worse, this is an era in which oxygen is a highly regulated commodity, forcing the time travellers to risk everything and don spacesuits themselves. With the walking dead closing in, the Doctor is forced to make a terrible sacrifice in order to get to the bottom of things.
Extremis by Steven Moffat, directed by Daniel Nettheim
The Pope summons the Doctor to the Vatican. For centuries, its library of banned and blasphemous texts, the Haereticum, has contained a volume called Veritas -- “truth” -- written in a lost tongue. Recently Veritas has been translated, but every person who has read it has taken their own life. The Pope asks the Doctor to read Veritas himself, and get to the bottom of the rash of suicides. No sooner does the TARDIS arrive in Rome, however, than the Doctor learns that the text of Veritas has been e-mailed across the globe, and the body count is starting to rise.
The Pyramid At The End Of The World
The Pyramid At The End Of The World by Peter Harness and Steven Moffat, directed by Daniel Nettheim
The sudden appearance of an ancient pyramid in close proximity to the planet's three mightiest armies heralds the start of the Monks' scheme to take over the Earth. Once again pressed into service as President of the world, the Doctor finds himself coordinating the responses of the American, Russian and Chinese forces, even as the Monks promise that the end of the human race is at hand. But in a lab in Yorkshire, a series of seemingly random events are playing out that hold the key to the Monks' plan, forcing Bill to make an awful choice.
The Lie Of The Land
The Lie Of The Land by Toby Whithouse, directed by Wayne Yip
The Monks have protected and guided mankind since the beginning of time. Or have they been its conquerors and dictators for just the last six months? Bill finds herself one of a small number of memory criminals who remember history differently, and becomes determined to find the one man who can restore humanity to the way it was meant to be: the Doctor. But the Doctor is now a spokesperson for the Monks, reinforcing planet Earth's new narrative. With Nardole's help, Bill must undertake a desperate gambit to discover the truth.
Empress Of Mars
Empress Of Mars by Mark Gatiss, directed by Wayne Yip
When NASA discovers a giant message in English on the surface of Mars, more than a century old, the Doctor, Bill and Nardole travel to the Red Planet in 1881 to investigate. There they discover a platoon of British soldiers, who have travelled to Mars after finding an Ice Warrior in suspended animation, crashlanded in the African veldt. The soldiers believe that the Ice Warrior plans to reward them with riches excavated from beneath the dead surface of Mars, but in fact they are being used to locate the Empress Iraxxa and her legion of Warriors.
The Eaters Of Light
The Eaters Of Light by Rona Munro, directed by Charles Palmer
The TARDIS arrives in 2nd century Scotland to solve the mystery of the vanished Ninth Roman Legion. The travellers find the soldiers massacred, their bodies in a state of decay akin to decades of sunlight deprivation. The Doctor and Nardole are captured by the Picts who were fighting the Roman incursion, while Bill is rescued from an alien predator by the survivors of the Lost Legion. An interdimensional portal, hidden within a stone cairn, holds the secret to defeating the monster -- but conflict between the Picts and the Romans threatens to doom the world.
World Enough And Time / The Doctor Falls
World Enough And Time / The Doctor Falls by Steven Moffat, directed by Rachel Talalay
The Doctor decides to test Missy's more benevolent intentions, by having her take his place alongside Bill and Nardole while investigating a distress call. The call emanates from an enormous colony ship, which is struggling to free itself from the gravitational pull of a black hole. To make matters worse, the ship is overrun with invaders who seem to have appeared from nowhere. When Bill is badly injured, the invaders take her away to the ship's lower decks. Bill finds herself in a world where time passes more quickly than for her friends, where the people are undergoing eerily familiar surgeries to convert into something other than human... and a kindly man hides a dark secret.
Nardole stays aboard the spaceship to defend against future Cyber incursions, while Bill departs to travel the universe with Heather.

Making History

Season Thirty-Six was Doctor Who's tenth since its return from cancellation in 2005. But this landmark would also mark the beginning of another era of change for the programme. On January 22nd, 2016 the BBC announced that it would be Steven Moffat's final season as showrunner, with former Doctor Who writer Chris Chibnall taking over for Season Thirty-Seven. Peter Capaldi was asked to remain with the series, but decided to leave with Moffat, as would executive producer Brian Minchin. For his last season, then, Moffat decided to go back to basics, with a series of stories viewed through the eyes of new companion Bill Potts which treated Doctor Who as if it were brand-new all over again -- almost 54 years on from its debut.

Special (2017): Twelfth Night

Companions and Recurring Characters

The Captain, whose full name was Archibald Hamish Lethbridge-Stewart, fought for the British during World War I. He encountered the First and Twelfth Doctors when the efforts of the time-travelling Testimony project went awry.

The Captain was played by Mark Gatiss in Twice Upon A Time in December 2017.

The Captain

The Story
Twice Upon A Time
Twice Upon A Time by Steven Moffat, directed by Rachel Talalay
On the verge of regenerating but weary of his long life and the burden of assuming a new form, the Doctor finds himself in Antarctica in 1986. There he comes face to face with his original self, who is contending with the weighty decision of whether or not to accept his first regeneration. Together the two Doctors must come to the aid of a time-lost British army captain from the Great War, who is being pursued by a mysterious woman seemingly made from glass. With Bill Potts somehow back at his side, the Doctor embarks on what may be his final journey into time, space and memory.
Accepting that he is not yet ready to end his travels, the Doctor regenerates after succumbing to the injuries inflicted by the Cybermen.

Making History

Outgoing showrunner Steven Moffat had originally assumed that the 2017 Christmas special would be handled by his successor, Chris Chibnall. However, when Chibnall asked to begin his tenure with a full season rather than a one-off adventure, Moffat agreed to extend his stay on Doctor Who by one episode rather than lose the Christmas special slot altogether. Since World Enough And Time / The Doctor Falls had already been structured to set up the Twelfth Doctor's regeneration -- and write out companions Bill Potts and Nardole -- Moffat elected to write himself out of this narrative corner by pairing the Doctor with his original incarnation, in a story set during the closing moments of 1966's The Tenth Planet when the First Doctor was also on the brink of regeneration. David Bradley, who had portrayed William Hartnell in the docudrama An Adventure In Space And Time, was now recruited to play the version of the Doctor whom Hartnell had originated.