The Halloween Apocalypse (TV story)

The Halloween Apocalypse, prefixed in various sources with either Flux or simply Chapter One, was the first episode of series 13 of Doctor Who, and formed the first chapter of the six-part serial Doctor Who: Flux.

This opening chapter introduced the Flux, a universe-breaking force which is bound for Earth, as well as Swarm, who escapes his confinement and "frees" his sister Azure from her earthly life. Dan Lewis also joins the TARDIS team, ending Yasmin Khan's largely unwritten solo travels with the Thirteenth Doctor.

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. This carries on from the revelations of 2020's The Timeless Children.

Synopsis
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Plot
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Cast

 * The Doctor - Jodie Whittaker
 * Yasmin Khan - Mandip Gill
 * Daniel 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

Crew
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Story notes

 * 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 subtitles, she first tries to copy the voice of the Twelfth Doctor and then the Seventh Doctor.

Continuity

 * The Doctor mentions Nitro-9, an explosive invented by Ace. (TV: Dragonfire)
 * The Doctor is interested in learning more about the Division. She learned of her past lives as the Timeless Child on Gallifrey, and knows these memories were taken from her by this organisation. (TV: The Timeless Children)
 * The guns owned by En Sentac and K-Toscs are the same model as that owned by Gat, a member of the Division previously met by the Thirteenth Doctor. (TV: Fugitive of the Judoon)
 * The Doctor mentions having attended numerous Liverpool F.C. football matches. (AUDIO: Something Inside)
 * The Doctor uses leftover hopper virus particles to help deactivate parts of Karvanista's ship. (TV: Orphan 55)
 * The Cloister Bell sounds as the Flux approaches. The Doctor explains this means the TARDIS is in imminent danger. (TV: Logopolis et al.)
 * The Doctor smashes part of the TARDIS in order to release vortex energy, implicitly from the heart of the TARDIS, as a last resort. (TV: Boom Town, The Parting of the Ways)
 * The Doctor expresses a long-standing interest in the end of the universe. (AUDIO: The Great War; TV: Utopia, Listen)

Home video releases
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