The Day of the Doctor (TV story)

The Day of the Doctor
Doctor:	Eleventh Doctor
Companion(s):	Clara
Featuring:	Tenth Doctor War Doctor
Main enemy:	Zygons Daleks
Main setting:	London, 2013 England, 1562 Gallifrey, the Time War
Key crew
Writer:	Steven Moffat
Director:	Nick Hurran
Producer:	Marcus Wilson
Release details
Story number:	239
Premiere broadcast:	23 November 2013
Premiere network:	BBC One
Format:	1x75-minute special
Official trailer
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The Day of the Doctor was the fiftieth anniversary special of Doctor Who. The episode featured the return of David Tennant as the Tenth Doctor and the appearance of John Hurt as a previously unknown incarnation of the Doctor; The War Doctor. The special also included the surprise debut of Peter Capaldi as the Twelfth Doctor, as well as a cameo from an elderly Tom Baker, the former Fourth Doctor, whose role was kept ambiguous as either the Doctor or someone else entirely - The Curator. The episode provided a chance to reveal a missing element of the Time War that dramatically altered the outcome as viewers were previously led to believe. Instead of allowing Gallifrey to be destroyed, the Doctors were able to save it, giving the current incarnation a chance to forever shed his guilt from the outcome and begin a new mission to find his way home.

The episode was certified by the Guinness Book of World Records as the largest ever simulcast of a television drama, airing in 94 countries worldwide and in 1,500 theaters worldwide.

Synopsis

The Doctors embark on their greatest adventure in this 50th anniversary special. In 2013, something terrible is awakening in London's National Gallery; in 1562, a murderous plot is afoot in Elizabethan England; and somewhere in space an ancient battle reaches its devastating conclusion. All of reality is at stake as the Doctor's own dangerous past comes back to haunt him.

Plot

A police constable walks the beat by the Coal Hill School. He passes by a sign advertising "I.M. Foreman, Scrap Merchant". Inside the school, Clara Oswald is giving a lesson. As her students leave, a teacher runs into the classroom informing Clara that her "doctor" called, and left an address. She grabs her helmet and hops on her motorbike. When finally spotting the TARDIS, she drives straight into its open doors. The Doctor, perusing a copy of Advanced Quantum Mechanics, welcomes Clara back with a huge hug. Unexpectedly, the TARDIS takes off without starting the engines.

Startled, the Doctor looks out to see a helicopter carrying the TARDIS away from the field; it's UNIT. He calls their head of Scientific Research, Kate Lethbridge-Stewart, and learns that he has been summoned to the Tower of London. Kate is surprised to learn that he is on-board the TARDIS, which they thought was empty. She has it and him brought directly to the "scene of the crime". Upon arrival, he is handed sealed orders from Elizabeth I and taken into the National Gallery for proof of her credentials.

As they walk, the Doctor explains his relationship with UNIT to Clara, who is skeptical of the Doctor having an actual job. They stop in front of an impossible painting, something that belongs neither on Earth nor in 2013; an oil painting in 3-D. It depicts the fall of Arcadia on the last day of the Time War. Kate tells the Doctor that there is some controversy over the work's name. It is either named "No More" or "Gallifrey Falls". The painting is a slice of frozen time, a form of Time Lord art.

The Doctor is visibly disturbed by the painting. As his old memories awaken, he shares with Clara his darkest secret: the life he has tried to bury for years. There was a past incarnation of the Doctor that fought in the Time War, and made the ultimate decision to eliminate the Daleks and the Time Lords. And it was done on the very day this painting depicts... As the Daleks ravage Arcadia, the Gallifreyans are running in fear. There is little hope of survival. As children cry and the people scream, a soldier messages the High Council of Time Lords: Arcadia has fallen. He looks around and sees the Doctor's TARDIS. Then the elderly voice of The War Doctor asks him for his gun. He carves a message for the warring civilizations to see: NO MORE. The High Commanders gather in the War Room, planning their next moves, with the General dismissing the High Council's upcoming plans "as they have already failed". They receive the Doctor's message, calling him a madman. A Time Lady rushes in to inform the War Council that there has been a breach in the vaults. The most feared and forbidden weapon in the universe is missing: The Moment. The Doctor has stolen it, and intends to use it to end the Time War.

The Doctor strides across a desolate desert, a burlap sack over his shoulder. He enters a barn-like dwelling, and uncovers a complicated box, covered in gears. While he puzzles over how to open it, he hears a rustling sound. He opens the door and calls out. A girl's voice behind him reassures him that it’s "just a Wolf". Startled, he turns around: it's Rose Tyler, or at least an entity in her shape. He grabs her arm and throws her out the door, only for her to appear again, sitting on The Moment. She begins questioning the Doctor as to his motives and rationalizations (though it looks like she is making fun of him). Not realizing what she is, he orders her out, and then burns his hand on the box. Impishly, she guides the Doctor to realize that she is the interface of the Moment. She can hear the Doctor's thoughts, and has chosen the form of Rose Tyler / Bad Wolf as a familiar figure from his future. War-weary and bitter, he tells her to stop calling him the Doctor: he has lost the right to bear the title. She replies that he will be the one to save the universe. He explains that the suffering of the universe is too great: he must end it. Like a conscience, she challenges his words and actions, guiding him towards his future. He will destroy the Daleks, but he will also murder his own people. As to how many children on Gallifrey will die, he has no idea. She opens a window in time, to show him the man he will become. A time fissure opens, and a fez falls out.

Kate explains that Elizabeth left the painting to prove that the orders do come from her. The Doctor breaks the seal and reads her words. "My dearest love: I hope the painting known as Gallifrey Falls will serve as proof that it is your Elizabeth that writes to you now. You will recall that you pledged yourself to the safety of my kingdom. In that capacity, I have appointed you curator of the Under-Gallery, where deadly danger to England is locked away. Should any disturbance occur within its walls, it is my wish that you should be summoned. Godspeed, gentle husband." As Kate leads the Doctor and Clara away, McGillop receives a mysterious phone call. Befuddled, he stares at the painting, wondering why he should move it.

In England 1562, the Tenth Doctor and Queen Elizabeth I ride out of the TARDIS on horseback, to prove that it really is bigger on the inside. They share a picnic on a hill, after which he proposes marriage. When she joyfully accepts, the Doctor accuses her of being a Zygon. He whips out a "device that goes ding" to prove that she is a shape shifter, before realizing that it was the horse. They run for their lives, the Doctor now an engaged man. They split up in the woods, but Elizabeth is accosted by the Zygon. The Doctor runs through the woods, even threatening a rabbit before he is reunited with Elizabeth. However, a doppelganger of her appears, and he is unable to tell who is who. Suddenly a time fissure appears, and a fez falls through, shocking the Doctor and company.

Kate welcomes the Doctor and Clara to the Under-Gallery, established by Elizabeth I to house dangerous art. The Doctor notices that the floor is covered in stone dust, and asks Osgood to analyze it (with a triplicate report and lots of graphs). As they walk through the gallery, the Doctor spots a fez and immediately dons it, much to the bemusement of Clara. Kate shows them more 3-D paintings, all landscapes, with the glass covering the floor. The Doctor notes that the glass has been shattered from the inside, and Kate says that they all contained figures, which are now missing. Suddenly, another time fissure opens. Annoyed, the Doctor faintly recalls seeing the fissure before, before realizing that the fez that had fallen through was the fez he was now wearing. Delighted, he throws the fez into the fissure and followed it. Clara tries to follow, but Kate restrains her.

The Eleventh Doctor falls through the fissure and lands in front of the Tenth. Stunned, he dons the fez himself. The Eleventh pops up and gabbles excitedly about how skinny his predecessor is, which makes the Tenth realize who he is. They incredulously pull out their sonic screwdrivers and compare them. As they begin bickering, the time fissure increases in intensity. The Doctor orders the two Queens to run away. They both kiss the Tenth Doctor and flee. The Eleventh shouts through the funnel to Clara in 2013. Hypothesizing that the fissure can go both ways, he tosses his fez in, but it fails to appear in 2013. Kate then leaves, to call one of the UNIT members, not noticing a dark shadow behind her.

The War Doctor picks up the fez and steps into the fissure. Back in 1562, the two Doctors try to reverse the polarity, but the War Doctor falls through, landing in front of his future selves. He jovially greets them, asking after the Doctor and mistaking them for his companions. The two older Doctors simply pull out their sonics, affirming their identity to their younger self. Unimpressed by his future incarnations, the War Doctor asks if he is going through a mid-life crisis. Suddenly, they are surrounded by the Queen's soldiers. They are threatened by them, but Clara's voice sounds from the fissure in 2013, allowing the Doctors to convince them that she is "The Wicked Witch of the Well". Kate has, at that point, returned to Clara. The Queen returns to the group, implying that her human counterpart is dead. She has them arrested and taken to the Tower of London (the Eleventh loudly hinting for her to take them there). The hint is picked up on by Kate, who takes Clara to the Black Archive to retrieve Jack Harkness' vortex manipulator.

The Doctors are thrown in a cell with a wooden door. The War Doctor tries to sonic the door, but it fails. The Tenth asks why these three Doctors have been brought together.

Osgood and McGilop are reading the results of the analysis of the stone dust. The dust is from materials not found in the structure of the building, but statues. Osgood realizes why the statues were smashed: the inhabitants of the paintings needed a hiding place. The Zygons reveal themselves, accost McGilop, and corner Osgood. Osgood prays for the Doctor to save her, but instead of being eaten, she is faced with her duplicate. The Zygon taunts Osgood, but she gains the upper hand by tripping the alien with its own scarf, and runs.

Kate and Clara enter the Black Archive, housing the most dangerous alien tech recovered by UNIT. Its contents are so top secret that its staff has their memories modified every day. Apparently, this has happened to Clara, as she has already obtained the necessary clearance to enter the archive. They view the Vortex Manipulator, by trying to find the activation code. The Doctor has the code, but he hasn't informed UNIT of it. A scientist phones Kate, and she orders him to take a picture of some numerals (possibly the code) and text it to her. Osgood and McGilop enter the Archive, to Clara's surprise. They and Kate reveal themselves as Zygons. As they prepare to kill Clara, she sees the picture of the numerals on the phone. Taking a desperate gamble, she enters the code and travels to the past.

The Eleventh Doctor scratches the activation code onto a wall in their cell, while the other two Doctors puzzle out how to escape. The War Doctor proposes an isolated sonic shift in the door molecules in order to disintegrate the door, but the Tenth Doctor rejects the idea, saying it would take centuries to calculate necessary formula. The War Doctor starts bickering with the Tenth and Eleventh Doctors, chastising them for their shame of being "grown-up". Subdued, they look at him darkly, reminding him of the day he ended the Time War (unaware that this is that Doctor in the process of making that choice). Bad Wolf Rose reappears, and urges him to ask his future selves the question that he needs to know: How many children were on Gallifrey that day. The Eleventh Doctor claims he doesn't know, and that he's forgotten the events of that day. The Tenth Doctor bitterly states that there were 2.47 billion children that day. The Tenth Doctor has become "the man who regrets" and the Eleventh "the man who forgets". They are the future of the Doctor.

Bad Wolf Rose reminds the War Doctor that his sonic screwdriver, at the most basic level, is the "same software, different face". They realize that if the War Doctor scans the door and implants it as a permanent subroutine in the screwdriver, it will take 400 years to calculate the formula necessary to disintegrate the door, meaning that the Eleventh Doctor's screwdriver, being essentially the same as the ones before it, has the completed calculation ready. They exuberantly congratulate themselves on their cleverness, before Clara pushes open the door, which has been unlocked the entire time. Clara chastises the three Doctors for being obtuse, and the Queen comes in, telling them that she left the door unlocked the entire time as a test. She takes them down to the Zygons' lair to show them their plan.

Osgood walks in the halls of the Under-Gallery, before discovering Kate trapped in a Zygon nest. She frees her, but Kate bemoans the fact that the Zygons have control of the Black Archive.

The Doctors and Clara follow the Queen to the lair, whereupon they discover that the Zygons intend to invade the cushier future (2013) in order to establish a new home-world. They therefore have translated themselves into stasis cubes, which are the Time Lord's three-dimensional paintings. They are freezing themselves to escape the primitive time period they are trapped in. The Tenth Doctor tries again to prove that the Queen is the Zygon version, but she reveals (to his mortification) that she is the real Elizabeth: she slew her twin in the forest and took her place as Zygon commander. She calls on the Doctor to save England, but first whisks him away to be married (with his past and future selves as reluctant witnesses, and an enthusiastic Clara).

The Tenth Doctor is "married" to Elizabeth.

The three Doctors and Clara return to the Tenth's TARDIS (with the other two insulting the desktop theme). The three Doctor's presence causes the TARDIS to short a bit, showing the interior of the War Doctor's TARDIS, then finally the most current TARDIS desktop (which also receives an insult). They set sail for the Black Archive. Kate, Osgood, and McGillop confront their doppelgangers in the Black Archive. She threatens to detonate a nuclear warhead in order to protect the planet, and voice-activates it. The Doctor's voice crackles on, begging Kate not to detonate. He tries to land, but the Tower of London is TARDIS-proof. However, they figure out a way to get in. The Doctor calls McGillop in the past, and instructs him to bring the painting to the Black Archive.

The two Kates fight over the detonation, both needing to agree in order to stop the detonation. Osgood begs the Doctor to save them again, as the Doctors and Clara force their way out of the painting, having frozen themselves in it earlier. The three Doctors hand the Kates an ultimatum: they trigger the memory modifiers to confuse everybody as to whether they are a Zygon or a human. Then, if they stop the detonation and create a peace treaty, they will have their memories restored. Utterly confused over their identities, the Kates stop the detonation and negotiate a treaty. As they hash it out, Clara speaks to the War Doctor. She figured out that he hasn't used The Moment yet, explaining that her Doctor always talked about the day he wiped out the Time Lords. She says that he would do anything to take it back, but the War Doctor remains convinced that his actions will save billions of lives in the future. The Moment has come.

The Doctor stands in front of the Moment, a big red button to push. The interface questions him once more, trying to convince him of his goodness. He doesn't believe he is worthy of the name "Doctor", losing all hope for himself and his people. The interface reminds him of his hope as his future selves step out of their TARDISes. They join him at The Moment, ready to support the man who was the Doctor more than anybody else. They prepare to push the button together, but Clara tearfully objects. She never pictured the Doctor actually pushing the button, despite the fact that she knew he did it.

The reality of the Time War projects around them: children crying, innocents suffering. The Doctor could not find another way to end it all, but Clara believes in a different solution. She reminds the Time Lord of who he is: the Warrior, the Hero, and the Doctor. They've had plenty of warriors, and what he will do is a heroic act unto itself. What the universe needs now is a Doctor: never cruel or cowardly, never giving up, never giving in. A new day dawns on Gallifrey: a day of hope.

A brilliant new idea dawns on the Doctors. The intent of the Moment worked: the Doctor saw the future he needed to see. They change their minds about using the Moment. Instead, they intend to freeze Gallifrey in a moment in time, slipped away in a pocket universe. The Daleks will be exterminated in their own crossfire, and the universe will believe that the two races destroyed each other.

Another message appears before the High Command: GALLIFREY STANDS. The Doctors race in their TARDISes towards Gallifrey, and transmit themselves in the War Room. Three transmissions, each showing a different Doctor, appear. They explain their plan, their mad plan to save Gallifrey. They position themselves around the planet, and prepare to freeze it through the stasis cubes. The General objects, claiming that the calculations would take centuries, but the Doctor is well prepared for the task. After all, he's had centuries to think about it. Ten more phone boxes fly around the planet, and all the incarnations of the Doctor come together to save Gallifrey- even a thirteenth incarnation from the Doctor's days yet to come. As the Daleks increase their attack upon seeing the thirteen TARDISes, the High Command gives their blessing, and the Doctors save the planet and the Daleks destroy themselves.

Back in the National Gallery, they muse on the ambiguity of whether their plan succeeded. The mysterious painting remains an enigma to the Doctors, another thing lost to time. The War Doctor bids a fond farewell to his replacements, who finally address him as "Doctor": a man finally worthy of the title, even if he only knows it briefly. The War Doctor and the Tenth Doctor won't be able to retain the memory of these events until they occur to their Eleventh incarnation. The War Doctor pilots his TARDIS away, noticing that his body has worn thin again. Regeneration energy begins to overtake the War Doctor, but he is not alarmed in the least. He only hopes the change will leave him with less conspicuous ears this time and smiles peacefully as his next regeneration begins.

The Tenth Doctor questions his successor as to "where they're going"; he relents and reveals that they are destined to die on Trenzalore, in battle. He tells himself that the future is in good hands, and with a smile, he starts to step into his TARDIS, before expressing his desire to change their final destination, stating,"I don't want to go," and then vanishing. With the Eleventh Doctor remarking how "he always says that," smiling reminiscently, remembering his final words before regenerating into his present self.

Clara asks the Doctor if he would like to sit to look at the painting for a little while. He smiles, asking how she knew. Clara kisses him on the cheek and tells him that she always knows. As she steps into the TARDIS, she mentions that an old man, possibly the Curator, was looking for him. The Doctor muses out loud on the fact that he would be a great curator, and that he could retire and be the Great Curator of the gallery. A very familiar voice affirms this, and the astonished Doctor looks over to see a very familiar face sitting next to him. An old man who greatly resembles the Fourth Doctor speaks to him of the painting, and how its two names are actually one: Gallifrey Falls No More. This mysterious curator reveals that Gallifrey is indeed saved. The Eleventh Doctor has a mission, the mission of a lifetime: he must find Gallifrey and return them to the universe.

In a dream sequence, the Doctor joins his past selves gazing up at the magnificent planet in the sky, determined to save his home once and for all.

Cast

• The Doctor - Matt Smith
• The Doctor - David Tennant
• The Doctor - Christopher Eccleston
• The Doctor - John Hurt
• The Doctor - Paul McGann
• The Doctor - Sylvester McCoy
• The Doctor - Colin Baker
• The Doctor - Peter Davison
• The Doctor - Tom Baker
• The Doctor - Jon Pertwee
• The Doctor - Patrick Troughton
• The Doctor - William Hartnell
• Clara - Jenna Coleman
• Rose - Billie Piper
• Tom - Tristan Beint
• Kate Stewart - Jemma Redgrave
• Osgood - Ingrid Oliver
• Time Lord soldier - Chris Finch
• Androgar - Peter de Jersey
• The General - Ken Bones
• Arcadia father - Philip Buck
• Time Lord - Sophie Morgan-Price
• Elizabeth I - Joanna Page
• Lord Bentham - Orlando James
• McGillop - Jonjo O'Neill
• Atkins - Tom Keller
• Zygons - Aidan Cook, Paul Kasey
• Voice of the Daleks & Zygons - Nicholas Briggs
• Dalek 1 - Barnaby Edwards
• Dalek 2 - Nicholas Pegg
• Voice over artist - John Guilor
• The Doctor - Peter Capaldi (uncredited)

Crew

Executive Producers   Steven Moffat and Faith Penhale

General production staff Production Executive - Julie Scott Line Producer - Des Hughes Production Manager - Phillipa Cole Location Manager - Nicky James Location Assistant - Iestyn Hampson-Jones Unit Manager - Nick Clark Production Co-ordinator - Gabriella Ricci Assistant Production Co-ordinator - Sandra Cosfeld Production Assistant - Katie Player Production Secretary - Rachel Vipond Production Accountant - Jeff Dunn Assistant Accountant - Rhys Evans Script department Script Editor - Richard Cookson Camera and lighting department 1st Assistant Director - Fay Selby 2nd Assistant Director - Heddi-Joy Taylor-Welch 3rd Assistant Director - Marie Devautour Assistant Directors - Gareth Jones, Louisa Cavell Script Supervisor - Steve Walker Camera Operator - Joe Russell Focus Pullers - James Scott, Julius Ogden Grip - Gary Norman Assistant Grip - Owen Charnley Camera Assistants - Meg de Koning, Chris Johnson, Cai Thompson Gaffer - Mark Hutchings Best Boy - Colin Price Electricians - Jordan Brown, Gareth Crean, James Foy, Billy Harron	Art department Supervising Art Director - Paul Spriggs Assistant Art Director - Richard Hardy Art Department Co-ordinator - Donna Shakesheff Production Buyer - Sarah Frere Petty Cash Buyer - Helen O'Leary Set Decorator - Adrian Anscombe Set Dresser - Ian Griffin Concept Artist - Andrew Wildman Graphic Artist - Christina Tom Graphic Designer - Chris Lees Standby Props - Helen Atherton, Rob Brandon Standby Carpenter - Will Pope Prop Hands - Liam Collins, Ian Davies Standby Rigger - Bryan Griffiths Props Master - Paul Smith Props Chargehand - Ian Griffin Props Driver - Gareth Fox Props Makers - Alan Hardy, Jamie Thomas Construction Manager - Terry Horle Construction Chargehand - Dean Tucker Practical Electrician - Christian Davies Scenic Artist - Clive Clarke Costume department Costume Supervisor - Claire Lynch Assistant Costume Designer - Fraser Purfit Costume Assistants - Katarina Cappellazzi, Gemma Evans	Make-up and prosthetics Make-up Supervisor - Steve Williams Make-up Artists - Kathryn Newsome, Jenny Jones, Clare Golds Prosthetics - Millennium FX Movement Stunt Co-ordinators - Crispin Layfield, Jo McLaren Stunt Performers - Annabel Canaven, Tracey Caudle, Dani Biernat, Rob Hunt, Ian Van Temperley, David Newton, Cristian Knight, Kim McGarrity Casting Casting Associate - Alice Purser General post-production staff Post-production Supervisor - Nerys Davies Post-production Co-ordinator - Samantha Price Assistant Editor - Katrina Aust On-line Editor - Jon Everett Special and visual effects VFX Editor - Joel Skinner Colourist - Gareth Spensley Stereo 3D Sound Sound Recordist - Dein Llŷr Humphreys Dubbing Mixer - Tim Ricketts Sound Maintenance Engineers - Ross Adams, Chris Goding Dialogue Editor - Darran Clement ADR Editor - Matthew Cox Supervising Sound Editor - Paul McFadden Sound Effects Editor - Paul Jefferies Sound Editor - Doug Sinclair Foley Editor - Jamie Talbutt

Not every person who worked on this adventure was credited. The absence of a credit for a position doesn't necessarily mean the job wasn't required. The information above is based solely on observations of the actual end credits of the episodes as broadcast, and does not relay information from IMDB or other sources.

References

• The Zygon homeworld was destroyed during the first part of the Last Great Time War.
• Jack Harkness's vortex manipulator was saved in the Black Archive of the UNIT. It later ended up in the possession of the Eleventh Doctor and Clara Oswald.
• The board containing photos of Clara's last visit to the Black Archive also showcase photos of previous associates of the Doctor, including Wilfred Mott, Rory Williams, Amy Pond, River Song, Kamelion, Martha Jones, Peri Brown, Alistair Gordon Lethbridge-Stewart, Nyssa, Donna Noble, Captain Yates, Adric, Sara Kingdom, Tegan, Barbara Wright, Polly Wright, Grace Holloway, Ben Jackson, Ian Chesterton, Susan, Brigadier Winifred Bambera, UNIT Captain Erisa Magambo, and Rose Tyler.
• The Doctor's age is discussed:
  • While confronting a rabbit which he briefly believes to be a Zygon in disguise, the Tenth Doctor says that he is 904 years old.
  • When asked how old he is by the War Doctor, the Eleventh Doctor says that he doesn't know and has lost track, settling on "Twelve hundred and something, I think, unless I'm lying." He goes on to say that he is so old he couldn't remember if he was lying about his age.
  • At this point, shortly before the end of his life, the Doctor who fought in the Time War says that he's 400 years younger than the Eleventh Doctor, making him somewhere between 800 and 900 years old.

Story notes

• The story uses the original opening sequence, modified to include a BBC logo.
• With the regeneration of the War Doctor into (presumably) the Ninth Doctor, every transition from each incarnation of the Doctor up to the Eleventh Doctor has been depicted onscreen.
• This episode marks the sixth televised multi-Doctor story, not counting the times he met a past or future version of himself in the same incarnation.
• Two specially recorded scenes were shown before the special in its showing in cinemas. The first featured Dan Starkey as Commander Strax, accompanied by his Sontaran clone batch, lecturing the viewers on cinema etiquette. The second featured Matt Smith and David Tennant as the Eleventh and Tenth Doctors instructing viewers to put on their 3D glasses. The second ends with John Hurt's War Doctor suddenly appearing behind the two Doctors who turn towards him while he has back to them as the feature starts.
• The episode's first few seconds are in black and white, as was done with the first episode of TV: The Two Doctors in 1985.
• Since the Zygons are shapeshifting creatures, it could be said that, apart from Aiden Cook and Paul Kasey, Jemma Redgrave, Joanna Page, Ingrid Oliver and Jonjo O'Neil are also portraying them.
• A short deleted scene on the BBC Doctor Who website features the War Doctor, the Tenth and Eleventh arriving at the tower of London in ankle shackles, the Eleventh says his shoes "bring the cool" and that the Tenth 'wouldn't understand the cool," the exasperated War Doctor declares they haven't drawn breath (stopped talking) since Richmond.
• This is the first episode to not include a pre-credits sequence since Partners in Crime.
• In parallel with production of the special, Peter Davison wrote and directed The Five(ish) Doctors Reboot, a 31-minute comedy in which he, Sylvester McCoy, Colin Baker (and, to a degree, Paul McGann) attempt to secure roles in the special. Portions of the short were filmed during production, and the special, which was released by the BBC after broadcast of The Day of the Doctor, included behind-the-scenes footage of the shooting of the first Undergallery scene, with additional dialogue by the Doctor not heard in the final broadcast (in the alternate take, the Eleventh Doctor tastes the dust, and remarks that he's "feeling peckish" when asked if he can tell anything from doing so).
• Actor John Guilor is credited as a voice over artist in the credits, although they do not say which role he voiced. Castingcallpro.com credits him as the voice of the First Doctor, who indeed has some lines that Hartnell never said.
• This is the first on-screen appearance of the Daleks not to feature those of the New Dalek Paradigm design since their first appearance in Victory of the Daleks.
• As Clara leaves the school a clock can be seen to display the time as 17:16, the broadcast time of the first episode.
• Christopher Eccleston, the actor who portrayed the Ninth Doctor, though approached with a chance to reprise his role, turned down the offer to return for the fiftieth anniversary. Though he was enthusiastic about the series, he was used to the habit of committing to a role for the long run, rather than brief appearances for reprisals. For this reason, the War Doctor's regeneration into the Ninth Doctor is not shown to completion. Visually recreating the Ninth Doctor would have required intricate rotoscoping to make up for his absence.
• Peter Capaldi made a surprise, brief appearance as the Twelfth Doctor in the climatic battle sequence, joining the earlier Doctors in their effort to hide Gallifrey in a pocket universe.
• The Second Doctor is the only Doctor to have appeared in every full length Multi-Doctor episode, appearing as a main character in The Three Doctors, The Five Doctors and The Two Doctors. He appeared briefly in this episode alongside the other Doctors saving Gallifrey.
• The access code for the vortex manipulator is <a href="tel:<a href="tel:1716231163">1716231163</a>">1716231163</a>. This is a reference to the time (17:16) and date (23/11/63) that TV: An Unearthly Child first aired.
• The opening scenes mimic the original open to TV: An Unearthly Child. The opening sequence is the original Hartnell titles with the BBC logo added; the first shot shows a police officer going by a sign for 76 Totter's Lane, and the second shot is set at Coal Hill School as class dismisses. Clara is now a teacher at Coal Hill School. A sign shows that Ian Chesterton is chairman of the school's Board of Governors, also showing that a W. Coburn is headmaster.

Production errors

If you'd like to talk about narrative problems with this story — like plot holes and things that seem to contradict other stories — please go to this episode's discontinuity discussion.

• As Osgood receives a call from the Eleventh Doctor, for Kate Stewart, she is heard talking on the phone but is seen running with the phone held out from her head.
• After the TARDIS is airlifted to London there are several shots in which the TARDIS -- with its door open -- is seen in the background. Unlike most recent occasions in which this view is offered, the interior is seen to be dark and the console room is not visible.
• As Queen Elizabeth and her duplicate are kissing the Tenth Doctor goodbye on the wide shots the Eleventh Doctor's hair sticks out at the front of the fez, in the closer shots his hair is slicked into the fez.
• When the Tenth Doctor has been kissed by Elisabeth in their wedding, his collar is up in one shot, and down in the next.
• A close-up of the screen of the Space-Time Telegraph shows that it refers to the Brigadier's last name as "Left-Bridge" Stewart.
• When all thirteen incarnations of the Doctor arrive to hide Gallifrey in a pocket universe, the Seventh Doctor first appears in his yellow pullover with question marks. When he appears again, his costume changes to the one he wore in the TV Movie and he is now in the Victorian parlor console room. When he appears for the third time, he goes back to wearing the pullover he originally wore in the television series.
• At the end of the special, when the three Doctors are in the museum, the Tenth Doctor asks what the painting is actually called. In that shot, the door to his TARDIS is open. In every shot after that, the door is closed.
• At the end in one shot, as 12 incarnations of the Doctor look at Gallifrey, all of the Doctors are inverted towards the planet, but in the next shot they are inverted away from it. Also the First Doctor is now positioned behind the Eleventh Doctor (although, as this is a dream sequence, it may not count as an error).

Continuity

• A police officer walks by a sign for 76 Totters Lane, and the second shot is set at Coal Hill School as class dismisses. Clara is now a teacher at Coal Hill School. A sign shows that "I Chesterton" is chairman of the school's Board of Governors
• A policeman from San Francisco previously rode a motorbike into the TARDIS (1996 TV Movie). The Tenth Doctor also rode a moped out of the TARDIS (TV: The Idiot's Lantern), and the Eleventh Doctor did the same with a motorbike (TV: The Bells of Saint John).
• The Tenth Doctor's wedding with Elizabeth I is shown. (TV: The Shakespeare Code, The End of Time, The Beast Below, Amy's Choice, The Wedding of River Song) Presumably, the fact that he indicates no intention of returning to his new wife is what results in her antagonism towards him when they next met in 1599. (TV: The Shakespeare Code)
• The Tenth Doctor's reference to his wedding in The End of Time places his appearance here somewhere in the gap between The Waters of Mars and The End of Time, during which he traveled around for a bit to try to avoid his fate. He tells a rabbit he is 904 years old here, while in The End of Time he states he is 906. This suggests that, like the Eleventh Doctor's 200-year farewell tour but much shorter, the gap lasted several years.
• A painting of the Tenth Doctor wearing Elizabethan clothing, including a large collar, is shown alongside a portrait of Elizabeth I's. Although Elizabeth I married the Tenth Doctor, she met both the Tenth and Eleventh Doctors. While investigating a time anomaly in Victorian London, there was a statue of the Eleventh Doctor in Elizabethan clothing. Eleven said he thought that Elizabeth I had made him wear the clothing, which he thought was for private portrait. (GAME: The Eternity Clock)
• The Eleventh Doctor refers to his fate on Trenzalore. (TV: The Wedding of River Song, The Name of the Doctor)
• The Tenth Doctor, when returning to his own timeline, tells the Eleventh Doctor that he is glad his "future is in safe hands." These are the exact same words the First Doctor says to the Fifth Doctor upon the former's departure. (TV: The Five Doctors)
• The Tenth Doctor, upon hearing of Trenzalore, says they need to take a different direction as "I don't want to go." His successor notes that "He always says that.", being his last words before his regeneration. (TV: The End of Time)
• When the War Doctor enters the Tenth Doctor's TARDIS he says he really 'let it go'; the Eleventh comments that this was his "grunge phase". When the Eleventh Doctor enters the Tenth Doctor's TARDIS Console Room he loads his own 'desktop' changing the TARDIS design. The Tenth declares he doesn't like it. Both of these reference the Second Doctor when he saw the Third Doctor's TARDIS (TV: The Three Doctors) and the redesigned UNIT HQ (TV: The Five Doctors (TV story)), and the Eleventh Doctor when visited Craig Owens in his new home. (TV: Closing Time) It also refers to the Fifth Doctor's disgust with the Tenth Doctor "changing the desktop theme" when they accidentally ran their TARDISes into each other. (TV: Time Crash) The TARDIS told the Doctor that she archived past and future versions of the console room in The Doctor's Wife. While changing the theme the Console Room briefly features a hybrid of the Tenth Doctor's Console Room and the original TARDIS roundel design which is later seen to be the War Doctor's TARDIS theme.
• This is the first televised appearance of the Zygons since TV: Terror of the Zygons.
• Prior to regenerating, the War Doctor comments that his body is "wearing a bit thin", repeating the line spoken by the First Doctor immediately prior to his regeneration into the Second Doctor. (TV: The Tenth Planet). He then hopes that "the ears are a bit less conspicuous this time"; the Ninth Doctor makes a reference to the size of his ears in Rose, which presumably takes places shortly after from the Doctor's point of view.
• The Black Archive of UNIT appears. (TV: Enemy of the Bane, COMIC: Don't Step on the Grass)
• A pair of red heels identical to the ones River wore on the Byzantium are seen in the Black Archive. (TV: The Time of Angels)
• Amy's Pinwheel and Torchwood magnetic clamps are also seen in the Black Archive. (TV: Doomsday, The Eleventh Hour et al.)
• This is the first time all the Doctors of all regenerations come together.
• The Tenth Doctor asks the Eleventh where he's going and the Eleventh Doctor replies, "Spoilers." (TV: Silence in the Library / Forest of the Dead et al.)
• The Eleventh Doctor calls to Clara through a wormhole, referring to her as the "Wicked Witch of the Well." Hila Tacorien was previously referred to by this name due to the wormhole in Caliburn House. (TV: Hide)
• Kate Stewart asks for one of her father's files; she says it may be filed under the 70s or the 80s "depending on the dating protocol", a clear reference to the UNIT dating controversy.
• When Clara sees the Doctors together for the first time, she exclaims that "there's three of them" to which Kate replies, "We have a precedent for that." (TV: The Three Doctors)
• Clara had not knowingly visited the Black Vault beforehand, so she was surprised to find she had previously been vetted and granted high-level access. Photos of her and Kate Stewart are pinned to a board showing all of the Doctor's companions. However this is the first time they have met from Clara's point of view.
• Kate asks Osgood to tell "Malcolm" to change the batteries in the robotic ravens outside the Tower of London, and later calls Malcolm to request some of her father's files. This could be a reference to Malcolm Taylor, a UNIT scientist the Tenth Doctor met during his time on San Helios with the Swarm. (TV: Planet of the Dead)
• The Time Lords in the War Room mention that the High Council are holding an emergency session, and that they have plans of their own. This session is presumably the one depicted in (TV: The End of Time), in which the Lord President planned to use the Master to allow Gallifrey and the Time Lords to escape the time lock.
• The War Doctor and his successors were haunted over the 2.47 billion children of Gallifrey they killed by using the Moment. When the Eleventh Doctor took Amy Pond to Starship UK, he was moved by the sound of children crying. (TV: The Beast Below)
• An eccentric, Doctor-like character who went by the name "the Curator" appeared in the story Summer Falls, which was marketed as being written by Amelia Williams.
• Christopher Eccleston decided against returning for the regeneration, just as Colin Baker previously did for TV: Time and the Rani. A hint of the actor's face -- primarily his eyes -- are inserted digitally into the sequence.
• Upon viewing the Moment's controls, the War Doctor asks "Why is there never a big red button?", which the Moment later modifies herself to incorporate. The Tenth Doctor previously mentioned he could never resist pressing a "great, big, threatening button." (TV: The Christmas Invasion)
• When the Doctor calls from the TARDIS phone, his telephone number once again is <a href="tel:<a href="tel:07700900461">07700900461</a>">07700900461</a>, as it was in (TV: The Stolen Earth).
• The Moment, like the TARDIS, is confused by tenses. (TV: The Doctor's Wife)
• The War Doctor calls the Eleventh Doctor's bow-tie a "dicky bow", criticising the fashion choice as Amy Pond and Rory Williams have. (TV: The Eleventh Hour, Amy's Choice, The Lodger)
• The Tenth and Eleventh Doctors say "Reverse the polarity"
• Romana has said previously that, on Gallifrey, paintings are done by computers (3D graphics). (TV: City of Death)
• The Tenth Doctor previously encountered the Zygons in the Lake District in September 1909 in the company of Martha Jones. (PROSE: Sting of the Zygons) The Eleventh Doctor encountered them when he took Amy Pond and Rory Williams on an anniversary trip to the Savoy Hotel in 1890. (TV: The Power of Three)
• When surrounded by Queen Elizabeth I's soldiers, the War Doctor asks the Tenth Doctor and the Eleventh Doctor if they were going to "build a cabinet at them". The phrase "build a cabinet" was previously said by River Song, and "build some shelves" was said by Jack Harkness. (TV: The Doctor Dances, Day of the Moon)

Footnotes