The Halloween Apocalypse (TV story)

The Halloween Apocalypse

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The Halloween Apocalypse
Doctor:	Thirteenth Doctor
Companion(s):	Yaz
Featuring:	Dan, Diane, Vinder, Claire, Williamson, Stonehouse
Main enemy:	Karvanista
Main setting:	Liverpool, Arctic Circle and Observation Outpost Rose, 31 October 2021
Key crew
Writer:	Chris Chibnall
Director:	Jamie Magnus Stone
Producer:	Nikki Wilson
Release details
Story number:	297a
Premiere broadcast:	31 October 2021
Premiere networks:	BBC One, BBC America
Format:	1x50 minute episode; Part 1 of 6
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Doctor Who television stories
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The Halloween Apocalypse, prefixed with Chapter One in the title sequence, was the opening episode of series 13 of Doctor Who. It formed the first chapter of the six-part serial Doctor Who: Flux.

This chapter introduced the Flux, a universe-breaking force which is bound for Earth, as well as Swarm, a figure from the Doctor's past, who escapes his confinement and frees his sister Azure from her earthly life. Dan Lewis also makes his first appearance, and the Doctor is revealed to have been pursuing Karvanista, the last living member of the Division, the order which erased her memories of having been the Timeless Child.

Synopsis

Halloween, 2021. A storm approaches. Something tears through space and time, undoing everything it touches. Who is the man who escapes his shackles? What about Dan has got his captor's attention? Why have the Angels come? And what will remain of the Earth when this night is done?

Plot

Hanging upside-down from a gravity bar in handcuffs and foot locks above an ocean of acid, the Doctor tells a hologram of her captor, Karvanista, that he has not beaten her and Yaz. Karvanista denies this and informs them that if they do not die by the acid in 79 seconds, either his Kill Disks or the nearby supernova will get them, then vanishes and leaves to what he describes as "the final hours of planet Earth". Yaz is annoyed at the Doctor for repeatedly getting them into trouble, but they escape by grabbing onto the gravity bar like a trapeze when it drops them and holding on when it breaks in half. Despite their voice-activated handcuffs refusing to release, they spot the TARDIS lying sideways nearby, bounce off a trampoline inside the doors, and safely on a mattress. As their handcuffs finally release, they remember Karvanista's words and leave to go to Earth.

In Liverpool, 1820, inside a tunnel, Joseph Williamson tells another man how more workers are needed for his job. Outside, James Stonehouse berates Williamson on the irrelevance of what he is doing. Williamson, however, claims that he has a reason, but refuses to explain why he is preparing for the "cataclysmic", saying that anyone he tells would go mad.

In Liverpool, 2021, a man named Dan Lewis leads a group of visitors around the Museum of Liverpool, telling them about how great the city is. He is interrupted and escorted out by Diane, who tells him that he needs to stop pretending to be a tour guide because he could be permanently banned from the museum. He protests that he is making people happy, and they clarify where they will meet up for Halloween drinks.

A burst of sparks comes from the TARDIS console and the Doctor and Yaz wonder why it is not taking them to Earth. Before they can ponder this, the Doctor experiences a vision. Seeing a planetoid on the Burnished Rage battleground, the Doctor watches two people, En Sentac and K-Toscs, checking if a prisoner called Swarm is still contained, as he has been since the dawn of the universe. Swarm awakes and taunts them before easily breaking free and killing them both, visibly renewing himself as he does so. He turns around and tells the Doctor "trick or treat". Shaken, the Doctor comes to as Yaz alerts her to a black liquid seemingly leaking from the TARDIS. She scans it with her sonic screwdriver and pretends that everything is fine. She sets the dateline for 31 October.

In Liverpool, Dan emerges from Jenning Street Food Bank and gives a box of food and some sweets to two people dressed in Halloween costumes. Inside, his co-worker Wilma offers to make up a box of food for him but he declines. Something dashes behind him as they talk but he does not see it. It scans them both as they lock up.

Arriving at his house on 37 Granger Street, Dan gives the last of his sweets to three small children who knock on his door. However, he refuses to give any to a man holding a carton of eggs who also knocks on his door. Going back inside, Dan finds no food in his refrigerator or cupboard and regrets his decision to turn down his food. As he does so, Karvanista breaks down Dan's door, revealing that is a canine Lupar. Dan simply believes him to be a dangerous Halloween prankster and threatens to call the police, and as Karvanista's efforts to hypnotise him fail, he captures him in an energy cage.

The Doctor and Yaz arrive in the middle of the street and after following a trace leading to Dan's house, they discover his door open. Finding the traces of Karvanista's stun cube, the Doctor uses a laptop to then discover that Karvanista is leaving while there is a fleet of seven billion Lupari waiting to invade Earth. The laptop then glows red as the Doctor realises it was a trap set for them, and they quickly run out as the house shrinks behind them, leaving next door's bathroom exposed.

Meanwhile, in the Arctic, two people called Jón and Anna go about their daily lives in a research station. They are alerted to something and discover a glowing device floating in the garage, both of which they seem to recognise. Anna simply smashes it and walks off.

Dan awakens in an electrified cage on Karvanista's ship. He briefly protests and threatens Karvanista with being reported for kidnapping until he is shown the view of the depths of space outside. Upon asking what is so special about him to warrant being kidnapped, Karvanista explains that he is totally irrelevant, threatens to kill him if he keeps talking, and storms out.

Back in Liverpool, the Doctor and Yaz ponder Karvanista's motives when a stranger comes up to them and introduces herself as Claire. She explains that she was surprised to see them as she knows them from their future, but seems to doubt herself. After the Doctor gets a signal from the Lupari, however, she rushes off with Yaz, with Claire reassuring her that they will see each other soon. When they go back into the TARDIS, the Doctor and Yaz realise that they have entered on the opposite side of the room. With Yaz co-piloting, they try to head towards the fleet but the TARDIS stalls until hit with a hammer. The Doctor performs a quick system check on the TARDIS and her mind, leading Yaz berates her for still not telling her everything. The TARDIS then gets hit and they realise that Karvanista has temporal residue around his ship and they have to force their way in.

Back on Earth, Claire is leaving to enter her house, but she finds a Weeping Angel behind her. She already knows not to blink and tries to pull out her keys and get into the house, but fails just as she sets foot inside the door and gets sent backwards in time.

On Observation Outpost Rose, far away in the universe, Observation Officer Inston-Vee Vinder makes his 21,754th status report. He remarks that nothing has changed, as per every previous report, but admits it the sight of space is unimaginably beautiful and he is grateful to see it. He then ends his reports with his usual request to his superiors - "go to hell". As he says that, his system reports an error and he notices problems in the planets of the Thoribus Trifecta. Watching a vast dark cloud expanding across space, it instantly disintegrates Thoribus Minor on impact and Vinder makes an emergency status update to save himself.

In the Arctic Circle, it is night time and Jón and Anna are asleep. However, they are awoken when Swarm appears in their bedroom, and as Jón goes to turn the bedside light on, he disintegrates just like En Sentac and K-Toscs did. Waking up, Anna questions why she is thinking 'thank you', and the touch of Swarm turns her into a creature of his species, named Azure - his sister.

The TARDIS lands on Karvanista's ship, with the Doctor quickly disabling the security systems before she sets off to find him, tasking Yaz with rescuing Dan. As Karvanista reports back to his command so he can re-join the battalion, the Doctor steps in and sonics his ship's systems and weapons to render them inactive. She warns him that the Lupari invasion of Earth is off and that he will tell her about the Division. Meanwhile, Yaz discovers Dan and sets to work on his cage's nine booby traps. Although he is initially wary of her, including her relationship with Sheffield, she successfully disables the cage and lets him out.

On the bridge, the Doctor reveals that Karvanista is the only known living Division operative left and has been tracking him down for answers, but she is distracted by a nearby alert. He explains that the entire Lupari race is on species recall, bonded to humanity as guardians to rescue them in the ultimate crisis; the Doctor realises too late that he is rescuing Dan, albeit grudgingly, instead of kidnapping him. The Lupari are retrieving humanity to save them from the Flux: a universe-destroying force that has already begun.

Meanwhile, Vinder desperately struggles against the effects of the Flux as it tears through the local planets with ease. With his outpost only minutes away from meeting the same fate, Vinder takes the advice of his system and does what he describes as the unthinkable - leaving his post, ejecting his observation pod from the outpost.

Karvanista explains to the Doctor that his ship hit a time disturbance at the head of the battalion, leading him to land on Earth early. Although he is proud that their ships can seemingly withstand the Flux, the Doctor believes that the humans will not be pleased, but she is interrupted by the loud arrival of Dan, with Yaz in tow. Angry at his human being stolen, the ship's systems power back up and Karvanista shoots energy shots out of his axe towards the travellers as they escape to the TARDIS. However, they emerge from a new third set of doors implanted in the floor and Dan sarcastically jokes that he is well versed in dimensional transcendentalism. The Doctor returns his miniaturised house to him and wonders who else knows about the Flux.

On a spaceship thirty trillion lightyears away, Sontaran Commander Ritskaw speaks to a hologram of Psychic Surveyor Kragar about their mission. Kragar states that after analysing psychic waves, he is pleased to confirm that the Flux is coming and will bring suffering on a universal scale. The prospect excites both of them.

The TARDIS materialises on the outskirts of the solar system and the Doctor, Yaz, and Dan see nothing apart from distant stars. As the Cloister Bell rings, she experiences a vision of the planets being destroyed, explaining she can feel it all. As Yaz asks her if she can stop it, the Doctor is interrupted by another psychic contact from Swarm. Speaking to her directly, he claims that the two of them used to be old enemies and that "they were so efficient" of wiping her memories of him. He taunts her and leaves. Back in reality, the group race into the TARDIS as the Flux comes for them and the Doctor is forced to hammer the console again to make it take off, planning to lure it to Earth, much to Yaz and Dan's shock. The Doctor calls Karvanista and tells him of the situation, worrying him that they do not have enough time to rescue the humans.

Elsewhere, in Liverpool, Diane is still waiting for Dan to arrive for their evening drinks. She hears the voice of Azure luring her to a nearby house and she begins walking towards it against her will. Despite her cries, the doors fly open with a blinding light and she finds herself inside, being faced down by the alien figure.

The Doctor tells Karvanista she has one plan to survive the Flux and orders the Lupari ships into formation. They eventually finish, encasing the Earth in its entirety, shielding it from the Flux. Karvanista orders the Doctor behind the battalion wall, but she finds that the TARDIS cannot escape its pull. Although Dan assumes they are safe, all three pairs of doors swing open, allowing the Flux in. The Doctor tries "one last throw of the dice" and hammers a hole in the control console, subjecting the Flux to pure vortex energy... to no effect at all. As Vinder, Claire, Williamson, Diane, Karvanista, the Weeping Angel, Ritskaw, Swarm, and Azure all face up to their own situations, the Doctor stares in horror as the Flux fast approaches the defenceless TARDIS, truly believing it to be the end of the universe.

Cast

• The Doctor - Jodie Whittaker
• Yasmin Khan - Mandip Gill
• Dan Lewis - John Bishop
• Karvanista - Craige Els
• Joseph Williamson - Steve Oram
• Diane - Nadia Albina
• Swarm - Sam Spruell
• Azure/Anna - Rochenda Sandall
• Vinder - Jacob Anderson
• Claire - Annabel Scholey
• Ritskaw - Jonathan Watson
• Kragar - Dan Starkey
• Old Swarm - Matthew Needham
• En Sentac - Sarah Amankwah
• K-Toscs - Charlie Oscar
• Wilder - Richard Tate
• James Stonehouse - Paul Leonard
• Wilma - Heather Bleasdale
• Kev - John May
• Jón - Gunnar Cauthery
• Weeping Angel - Barbara Fadden

Uncredited cast

• Children - TBA

Crew

Executive Producers   Matt Strevens and Chris Chibnall

Co-executive producer   Nikki Wilson

Written by Chris Chibnall	Directed by Jamie Magnus Stone	Director of Photography Robin Whenary	Production Designer Dafydd Shurmer	Visual Effects DNEG
Make-up Designer Claire Pritchard-Jones	Casting Director Andy Pryor CDG	Music Segun Akinola	Costume Design & Creature Design Ray Holman	Edited by Joel Skinner	Special Effects Real SFX
Original theme music by Ron Grainer  •  Title sequence by Ben Pickles  Music orchestrated & conducted by Alec Roberts  •  Recorded by Paul Golding  •  Mixed by Goetz Botzenhardt   Sontarans created by Robert Holmes  •  Weeping Angels created by Steven Moffat  •  In memory of Julie Ankerson

General production staff Head of Production - Jacquie Glanville Executive Producer for the BBC - Ben Irving Production Executive - Tracie Simpson Line Producer - Steffan Morris Associate Producer - Sheena Bucktowonsing Production Manager - Delmi Thomas Supervising Location Manager - Iwan Roberts Location Manager - Gareth Roberts Unit Manager - Jac Jones Production Co-ordinator - Sandra Cosfeld Assistant Production Co-ordinator - Jade Stephenson Production Secretary - Nikhil Theva Raj Executive Assistant - Caroline Cook Production Runners - Etty Stanley, Ellie Hilton Unit Drivers - Paul Watkins, Jolyon Davey, Steve Darwent Unit Medics - Glyn Evans, Andy Jones Business Affairs - Elaine Evans, Kyle Parsons, Steve Robson Production Accountant - Rhys Evans Assistant Accountants - Kate Barber-Williams, Kim Dyer Cast Payroll Accountant - Helen Searle Contracts Booker - Leanne Bowcott Crew Payroll Accountant - Bethan Wray Covid Manager - Pete Levy Covid Coordinator - Ellie Simmons Covid Assistants - Kyle Yates, Jonny Tarr Script department Script Editors - Caroline Buckley, Rebecca Roughan Camera and lighting department 1st Assistant Director - Christopher J Thomas 2nd Assistant Director - Lauren Pate 3rd Assistant Director - Jennifer Day Assistant Directors - Jac Lewis, Laura Thompson Script Supervisor - Vicky Cole Camera Operator - Mark McQuoid ACO Camera Trainee - Evangeline Davies Focus Puller - Jonathan Vidgen Key Grip - John Robinson Assistant Grip - Matt Clark Camera Assistant - Dan Patounas Gaffer - Mark Hutchings Rigging Gaffer - Andy Gardiner Best Boy - Gareth Sheldon Electricians - Gawain Nash, Stuart Gale, Matthew Hutchings, Rhodri Moses	Art department Supervising Art Director - Rebecca Brown Construction Art Director - Julia Jones Art Department Assistant - Laura Honeybun Art Department Co-ordinator - Hannah Miller Production Buyer - Billie Blue Williams Petty Cash Buyer - Sally Sharp Set Decorator - Vicki Male Action Props Buyer - Milannah Faith Summers Concept Artist - Louis Knight Graphic Designer - Stephen Fielding Trainee Graphic Designer - Lois Drage Standby Props - Matthew Ireland, Melissa Sheppard, Lewis Reece Standby Carpenter - Colm Garrett Prop Hands - Dewi Thomas, John Thomas, Liv Cheung, Tom Major, Christopher Ahearne Standby Art Director - Cerys Lewis Rigging - Shadow Scaffolding Standby Rigger - Alex Herbert Scenic Painters - Alison Drane, Rachel Willsher HOD Painter - Scenic Steve Painters - Lloyd Reece, Mark Reece Storeman - Lucy Hookings Prop Master - Paul Aitken Props Driver - Paul Carmichael Construction Manager - Tom Berrow Construction Assistant - Marcus Scholl Workshop Manager - Mark Hill Workshop Assistant - Chris Slocombe Construction Chargehands - Dan Berrow, Jonathan Tylke Construction Driver - Darren Bousie CNC Programmer - Kristian Tucker Plasterers - David Williams, Jason Tylke Practical Electricians - Rob Hearne, Matthew Dunford Draughtspersons - Lauren Harper, Alex Roberts Trainee Draughtsperson - Rachel Ellis Carpenters - Sam Burridge, Campbell Fraser, Matt Gronow, Rhys Andrews, Dean Tucker, David Hobbs, Ben McDonald, Ashley Bullock, Mike Venables, Julian Tucker Costume department Costume Supervisor - Ian Fowler Assistant Costume Designer - Simon Marks Costume Cutter/Maker - Brighde Penn Creature Costume Maker - Robert Allsopp & Associates Costume Assistants - Andie Mear, Nadia Cucinella Costume Trainee - Yiwen Lin	Make-up and prosthetics Make-up Supervisor - Emma Cowen Make-up Artists - Amy Riley, Angharad Walsh Junior Make-up Artist - India Jones Prosthetics Trainees - Tara Kemp, Nyle Pritchard-Trew Prosthetics Designer - Danny Marie Elias Prosthetics Artist - Amy Paul Junior Prosthetics Artists - Elly Suggit, Ashley Lovett Prosthetics Office Assistant - Gwenno Hughes Movement Stunt Co-ordinator - Crispin Layfield Stunt Performers - Belinda McGinley, Anna Benton Casting Casting Associate - Ri McDaid-Wren Casting Assistant - Ray Böhm General post-production staff Post-production Producer - Ceres Doyle Post-production Supervisor - Liv Duffin Assistant Editors - Hayley Williams, Brooke Taylor Michael On-line Editor - Christine Kelly Assistant On-line Editor - Luke Stanbury Special and visual effects Additional VFX - BBC Wales Graphics, Zodiak VFX, Ben Pickles VFX Editor - Emily Lawrence Assistant VFX Editor - Alastair Gray Colourist - Gareth Spensley Head Model Maker - Lee Radford Model Makers - Penny Howarth, Lee Price Sound Sound Recordist - Deian Llyr Humphreys AMPS Dubbing Mixers - Natasha Haycocks, Howard Bargroff Sound Maintenance Engineers - Christopher Goding, Joe Malone Sound Designer - Harry Barnes Dialogue Editor - Darran Clement ADR Editor - Matthew Cox Foley - Bang Post Production

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.

Worldbuilding

• The Cloister Bell sounds as the Flux approaches.
• The Doctor calls the Flux "the end of the universe".

Locations

• Karvanista has trapped the Doctor and Yaz on a planet with an acid ocean, which was about to be engulfed by a giant red star.
• Yaz and the Doctor were "top of the class" in a high-gravity circus workshop on Trapezium 7.
• Dan gives an unofficial tour around the Museum of Liverpool, where his friend Diane works.
• The Museum has an exhibition on the Williamson Tunnels, which were being created around 1820 by Joseph Williamson.
• Dan lives on Granger Street 37, Anfield, Liverpool, close to the football stadium.
• Dan arranges to meet Diane at the corner of Lark Lane.
• According to the Doctor, she and Yaz have landed in the Klopp era.
• Jón and Anna live in a isolated house in the Arctic Circle.
• Inston-Vee Vinder is stationed at Observation Outpost Rose to observe the space in the Thoribus Section. As the Flux approaches, he zooms in on the Thoribus Trifecta, seeing Thoribus Minor get destroyed.
• Yaz tells Dan she used to be a police officer for Hallamshire Police.
• Dan believes that Sheffield is "too close" to Leeds.
• Yaz tells Dan not to diss Yorkshire again.
• Vinder is from Kasto-Winfer-Foxfell.
• Karvanista's ship hit a time disturbance, which sent him hours ahead of his species on their way to Earth.
• The Doctor says she can feel the universe breaking as she sees a planet with life destroyed.
• Azure forces Diane inside a withered down house on Lark Lane.

Individuals

• When Diane tells Dan he is not official at the Museum, he calls himself an "Official Scouse".
• Diane warns Dan that Alan may ban him permanently if he keeps giving unofficial tours.
• Swarm uses psychic connection to show himself to the Doctor and shows her both his encounter with En Sentac and K-Toscs on the Burnished Rage battleground, how he escapes, and later confronts the Doctor herself in a mindscape.
• According to legend, Swarm has seemingly been imprisoned since "the Dawn of the Universe".
• Karvanista introduces himself to Dan as "Vanquisher of the Thousand Civilisations".
• Karvanista attempts and fails at a mind trick on Dan.
• Karvanista is angered by Dan talking about his mother.
• According to the Doctor, she has seen the Barcelona match nine times and suggest to Yaz they take on a game. She also claims to have been a ball boy for Trent once.
• Dan and his football team plays in shirts sponsored by Standard Chartered.
• Vinder is a the Commander and Observation Officer at Observation Outpost Rose.
• The Doctor asks Karvanista about the Division, since he is the only operative she can find that is still alive.

Species

• Karvanista is a Lupar, and the species-bonded paired guardian to "[his] human", Dan Lewis.
• Claire Brown is zapped back in time by a Weeping Angel.
• The Doctor says she can feel the universe breaking as she sees a whole species being destroyed.

Foods and beverages

• Dan works at a food bank.
• Wilma offers Dan soup, which he later regrets declining.
• Kev, the man attempting to trick-or-treat from Dan, is holding a carton of eggs.

Halloween

• Halloween is on 31 October.
• Dan gets trick-or-treaters at his house.
• Dan initially believes Karvanista is wearing a Halloween costume.

Technology

• The Doctor and Yaz are footlocked to a gravity bar.
• Kill Disks are set up by Karvanista to kill the Doctor and Yaz if they manage to escape the gravity bar.
• The Doctor accidentally blew up Karvanista's droid guards with Nitro-9.
• The Doctor and Yaz are handcuffed with voice activated cuffs set to respond to the Doctor's earlier Scottish accent. The Doctor tried both her twelfth incarnation's voice and her seventh incarnation's voice.
• Karvanista own a special energy weapon called a scythe that can blast energy.
• Karvanista used a stun cube on Dan to kidnap him.
• Karvanista used a special laptop to set a trap for the Doctor. When activated, it miniaturised Dan's house via a compressor blast.
• Karvanista has an electrified holding pen on his ship.
• Karvanista's ship is covered in temporal residue.
• The Doctor does an MOT check on her mind.
• The Survival Battalion of Lupari ships are built to withstand the Flux.
• Jón and Anna find a warning device in their garage.
• The system of Observation Outpost Rose warns Vinder of the Flux.
• The Doctor uses leftover Hopper virus to deactivate the security on Karvanista's ship.
• Karvanista is on Species Recall.
• Yaz mentions the TARDIS' protective air bubble.
• The TARDIS Cloister Bell sounds off as the Flux appear.
• The Doctor uses her hammer to knock a hole in the TARDIS control console to unleash Vortex energy on the Flux.

Story notes

• This was the first Doctor Who television story to be set on Halloween, and the first "Halloween special", though an unofficial one.
  • Relatedly, The Halloween Apocalypse is set on the same day it was broadcast: 31 October 2021. This makes it the fifth episode in the revived series to do so, following The End of Time for 25 December 2009, The Big Bang for 26 June 2010, The Impossible Astronaut for 22 April 2011, and Resolution for 1 January 2019.
• The transmission of the episode was dedicated to the memory of Doctor Who's former Foley artist Julie Ankerson, who passed away on 28 July 2021.

Marketing

• Unusually for Doctor Who, the title for this story arc, Doctor Who: Flux, is used in place of the regular Doctor Who logo. This was previously done with series 3 of Torchwood, headlined Torchwood: Miracle Day, though this was an animation involving the chapter name as well, like "Day One".
• Though the title sequence gives this episode as Chapter One: The Halloween Apocalypse, other sources have differed on the prefix, naming this episode Flux: The Halloween Apocalypse instead.
• This episode marked the first time a new BBC logo was used on screen since 2005. The new BBC logo was incorporated into the title sequence and the end credits.

Connections

• When trying to release herself from the vocally-locked handcuffs, the Doctor claims that her failure to open them might be to do with the fact that she was Scottish when she set them up, and proceeds to attempt a Scottish accent. According to the BBC America subtitles, she first attempts to copy the voice of the Twelfth Doctor (Peter Capaldi) and then the Seventh Doctor (Sylvester McCoy).
• Yaz has been taught how to operate the TARDIS. In the television series, the Doctor had previously been seen teaching Donna Noble in TV: The Sontaran Stratagem, and was assisted in piloting the TARDIS by the Children of Time in TV: Journey's End. Nardole was seen piloting the TARDIS in TV: The Return of Doctor Mysterio. In other stories, several other companions have been taught to pilot the TARDIS by the Doctor, including Polly Wright and Ben Jackson in AUDIO: The Outliers, Zoe Heriot in AUDIO: Daughter of the Gods, Adric and Nyssa in AUDIO: The Star Men, and Ace in AUDIO: You Are the Doctor. Melanie Bush, however, taught herself how to pilot the TARDIS by AUDIO: The Quantum Possibility Engine.
• Karvanista's attempt at hypnotism by swiping his hand across in front of Dan's face is similar to that of the "Jedi mind trick" from the Star Wars saga.
• Dan Lewis' apparent dislike for Leeds, and nearby Sheffield, stems from the historic rivalry between Lancashire and Yorkshire. Dan is a born Liverpudlian, and the city of Liverpool was historically part of Lancashire before the reform of county boundaries in 1974; both Leeds and Sheffield are typical Yorkshire cities.

Ratings

• Overnights: 4.43 million
• Consolidated: 5.79 million

Filming locations

to be added

Myths

to be added

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.

to be added

Continuity

• The Doctor mentions having Nitro-9, an explosive invented by Ace and seen consistently throughout her tenure as a companion of the Seventh Doctor in TV: Dragonfire ^[+]Loading...["Dragonfire (TV story)"]. The Doctor also alludes to the Seventh Doctor — and the Twelfth — when wondering if she "was Scottish" when she first set up the voice-activated handcuffs; the punchline that they are activated when she says "Relief", which it parses as "Release", suggests that she actually set them up as the Third Doctor, who sometimes spoke with a faint, but noticeable lisp.
• The guns owned by En Sentac and K-Toscs are the same model as that owned by Gat, another member of the Division, as seen in TV: Fugitive of the Judoon ^[+]Loading...["Fugitive of the Judoon (TV story)"]. Similar guns would be seen in the Fugitive Doctor and company's use in the flashbacks in TV: Once ,Upon Time ^[+]Loading...["Once ,Upon Time (TV story)"].
• After renewing, the Younger Swarm declares that he has been "renewed", a term previously landed upon by the Second Doctor to describe his regeneration from the First Doctor in TV: The Power of the Daleks ^[+]Loading...["The Power of the Daleks (TV story)"]. Swarm more precisely exults in being renewed "at last", echoing the newly-recorporated Tremas Master's cry of "a new body, at last" in TV: The Keeper of Traken ^[+]Loading...["The Keeper of Traken (TV story)"].
• The Doctor mentions having attended numerous Liverpool F.C. football matches. The Eighth Doctor attended one in the course of AUDIO: Something Inside ^[+]Loading...["Something Inside (audio story)"], and the Eleventh Doctor was shown to have an affinity with the game in TV: The Lodger ^[+]Loading...["The Lodger (TV story)"] and TV: The Power of Three ^[+]Loading...["The Power of Three (TV story)"].
• Yaz chastises the Doctor for still keeping secrets from her, previously a point of friction n TV: Spyfall ^[+]Loading...["Spyfall (TV story)"] and TV: Fugitive of the Judoon ^[+]Loading...["Fugitive of the Judoon (TV story)"].
• The Doctor mentions Ryan and Graham's departure, which occurred at the end of TV: Revolution of the Daleks ^[+]Loading...["Revolution of the Daleks (TV story)"].
• The Doctor uses leftover hopper virus particles to help deactivate parts of Karvanista's ship. The hopper virus was a plot point in TV: Orphan 55 ^[+]Loading...["Orphan 55 (TV story)"].
• The Doctor is interested in learning more about the Division. TV: The Timeless Children ^[+]Loading...["The Timeless Children (TV story)"] depicted her being forced by the Spy Master to confront her origins as a mind-wiped version of the Timeless Child. Swarm also comments on the mind-wipe, otherwise treating the present-day Doctor as the same person as his old foe, much to her confusion.
• Paraphrasing the words of the Ninth Doctor in his first metting with Rose Tyler in TV: Rose ^[+]Loading...["Rose (TV story)"], the Thirteenth Doctor says "Nice to meet you, Dan. Run for your life." upon meeting Dan.
• The Doctor smashes part of the TARDIS in order to release vortex energy, implicitly from the heart of the TARDIS, as a last resort. This was previously seen in TV: Boom Town ^[+]Loading...["Boom Town (TV story)"] and TV: The Parting of the Ways ^[+]Loading...["The Parting of the Ways (TV story)"].
• The crossing of the TARDIS's vortex energy would later be clarified by Tecteun in TV: Survivors of the Flux ^[+]Loading...["Survivors of the Flux (TV story)"] to have "disrupted" the Flux just as it "came into existence", causing it to have temporal effects as well as spatial. It also damaged the TARDIS itself, as seen in TV: War of the Sontarans ^[+]Loading...["War of the Sontarans (TV story)"] onwards and referenced in PROSE: Meet the Crew ^[+]Loading...["Meet the Crew (feature)"]. This and the damage done to the Web of Time by the Flux harming the Temple of Atropos would eventually force the Doctor to activate the TARDIS self-reset, precipitating the events of TV: Eve of the Daleks ^[+]Loading...["Eve of the Daleks (TV story)"].

Home video releases

DVD and Blu-ray release

• The Halloween Apocalypse was released, together with the five other episodes of Doctor Who: Flux, on DVD and Blu-ray in region 1/A on 15 February 2022, in region 2/B on 24 January 2022 and in region 4/B on 16 March 2022.

• 

  Series 13 - DVD cover

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  Series 13 - Blu-ray cover

• 

  Series 13 - Steelbook cover

Digital releases

• In the United Kingdom, this story is available on BBC iPlayer.

External links

• Official The Halloween Apocalypse page on the Doctor Who website
• Chapter 1: The Halloween Apocalypse at Chrissie's Transcripts Site