The thirteenth series of the Britishscience fiction television programme Doctor Who, known collectively as Flux, was broadcast from 31 October to 5 December 2021. The series is the third and last to be led by Chris Chibnall as head writer and executive producer. It is the thirteenth to air following the programme's revival in 2005, and the thirty-ninth season overall. The series, initially announced in November 2019, was the last to be broadcast on Sunday nights, continuing the trend set by the previous two series. It was followed by three associated specials, all of which aired in 2022.
Jodie Whittaker returns for her third and final series as the Thirteenth Doctor, an incarnation of the Doctor, an alien Time Lord who travels through time and space in her ship, the TARDIS, which externally assumes the appearance of a British police box. The thirteenth series also stars Mandip Gill and John Bishop as the Doctor's travelling companions, playing Yasmin Khan and Dan Lewis, respectively. The series follows the Thirteenth Doctor and her companions as they navigate a universe-ending anomaly called the "Flux", while dealing with enemies and secrets from the Doctor's past.
The series consists of six episodes, which form a single story across the series. The six episodes were directed by Jamie Magnus Stone and Azhur Saleem; Stone returned from directing for the previous series, with Saleem directing as a new contributor. Chibnall wrote all six episodes of the series, co-writing one episode with Maxine Alderton, who also returned after writing for the previous series. Filming commenced in November 2020, and was completed by August 2021. The series has received generally positive reviews from critics.
For the first time since The Trial of a Time Lord (1986), and the third time in the programme's history, the series tells one complete story across its entirety, rather than self-contained episodic stories.[1][2] It is the second time where all episodes are encompassed by a single story number; The Key to Time (1978–79) maintained separate serial designations.[3]
The Doctor and Yaz pursue Karvanista, of the Lupari species, to Liverpool, where he kidnaps tradesman Dan Lewis. The Doctor experiences a psychic vision of the mysterious Swarm, who claims to share a history with her, escaping from his imprisonment by the Time Lord Division. Before leaving Liverpool the Doctor and Yaz meet Claire, a woman from their future. Shortly after, a Weeping Angel sends Claire to 1965. On Karvanista's ship, Yaz rescues Dan while the Doctor confronts Karvanista over his connection to the Division, before addressing the Lupari's apparent invasion plan. Karvanista tells them the Lupari are actually saving humanity from Earth's destruction by the Flux, an unknown, all-consuming phenomenon that defies all laws of space and time. The Flux causes Vinder, the sole occupant of a remote space outpost, to evacuate, and catches the attention of the Sontarans. Following another psychic interaction between the Doctor and Swarm, the Flux accelerates its attack on Earth. The Doctor has Karvanista form a defensive shield with the other Lupari ships, protecting Earth from the Flux. Unable to transport behind the shield, the TARDIS is overtaken by the Flux, with the Doctor, Yaz and Dan inside.
The Doctor, Yaz and Dan wake up in Crimean War-era Sevastopol, where the Sontarans have replaced the Russians throughout history, and meet Mary Seacole and General Logan. The Flux's effects send Dan back to 2021 Liverpool, and Yaz to a damaged temple full of dying priests, beside Joseph Williamson and Vinder. The Doctor deduces that the Sontarans slipped past the Lupari's defences. Dan infiltrates the Sontarans' shipyard. Swarm arrives at the temple and reveals it to be in the Atropos region on the planet Time, killing the priests and taking Yaz and Vinder hostage. The Doctor enlists Seacole to gather intelligence on the Sontaran camp, then summons the Sontarans to negotiate a retreat, only to be arrested by Logan's soldiers, who later fight a disastrous battle with them. The Doctor regroups with Seacole and Logan's men, and they disrupt the Sontarans' supplies, but Logan reneges and bombs the camp. The Sontarans discover Dan, but Karvanista rescues him before destroying the shipyard, which resets the timeline. The Doctor manages to recover the TARDIS and collect Dan, but it is hijacked and brought to the temple, where they are forced to watch as Swarm is about to kill Yaz and Vinder.
The Doctor jumps into the temple's time storm and stalls Swarm by hiding Dan, Yaz and Vinder in their pasts, albeit with many details changed. Vinder reluctantly relives his time assisting the dictatorial Grand Serpent, and his demotion upon revealing the Serpent's misdeeds. Bel, a survivor of the Flux, travels through its ruins in a Lupari ship, evading Daleks, Sontarans and Cybermen. The Doctor jumps into her own timestream and recovers memories of her past incarnation, the Fugitive Doctor, and her time in the Division. It is revealed that she and Karvanista had previously raided the temple to defeat Swarm and rescue the priests. The present Doctor finds the priests and encourages them to return to life and the temple, but they separate her from her past to protect her. A mysterious old entity reprimands the Doctor. Bel is revealed to be searching for Vinder as his paramour, and is carrying his child. The Doctor returns Yaz, Dan and Vinder to the present and fixes the timestreams. She returns Vinder to his Flux-ravaged home planet, after which a Weeping Angel that had been stalking Yaz intercepts the TARDIS.
The Doctor reboots the TARDIS, forcing the Angel out and stranding them in the English village of Medderton, 1967. Former soldier Professor Jericho conducts psychic experiments on Claire, who has been sent back in time by the same Angel that had hijacked the TARDIS. An Angel sends Yaz and Dan back to Medderton in 1901, where they find a missing girl named Peggy. They discover a barrier to 1967 and Peggy's future self, who had to live out the rest of her life until then. The Doctor, Claire, and Jericho barricade themselves in his basement as the Angels close in. Claire reveals she is having visions of becoming an Angel, hosting one that has taken residence in her mind. Connecting to the Angel telepathically, the Doctor discovers the Angel is hiding from the other Angels, who are after it under orders from the Division. The Doctor and Claire escape through a tunnel surrounded by Angels, whilst Jericho is sent to 1901. The Doctor learns the Angels have taken the village out of time to capture the rogue Angel, who reveals it has offered the Doctor to the Angels for its own safety. The Doctor is turned into an Angel and transported to the Division, stranding the others in 1901. Bel arrives on Puzano and sees Swarm's accomplice Azure tricking survivors into being harvested for energy. She saves a local from falling into their trap and leaves a message for Vinder.
The Weeping Angels transport the Doctor to the Division where she meets the entity that had previously chastised her, revealed to be her adoptive mother, Tecteun. She reveals that the Division orchestrated the Flux, an antimatter wave, to kill the Doctor for interfering with their plans, and that they have knowledge of the multiverse. In 1904, Yaz, Dan, and Jericho search the world for artifacts and psychics to decipher when the world will end. They meet Williamson, who had discovered several doorways that led to various other places while excavating tunnels under Liverpool. Over many years, the Grand Serpent infiltrates UNIT as an officer, eliminating those who pose a threat to him. After being threatened by Kate Stewart, he deactivates all UNIT defences, allowing the Sontarans to enter Earth. Vinder discovers Swarm harvesting energy from Flux survivors, but he is caught and trapped in a device called a Passenger, where he meets Dan's friend Diane, who had been kidnapped earlier by Swarm and Azure. The Doctor watches helplessly as Swarm arrives, disintegrating Tecteun and threatening to do the same to her.
The Doctor is split into three copies due to time distortion, as Azure reveals that she and Swarm plan to engineer the Flux into a vehicle of constant universal destruction. Yaz, Dan, Jericho, and Williamson travel to 2021 and meet Kate Stewart and the second copy, who tells Claire and Jericho to infiltrate the Sontarans and takes her TARDIS from Kate. The third crashes Bel's ship into the Sontaran command. The Sontarans remove the third copy, whom the second rescues, and commit genocide against the Lupari. They offer an alliance with the Cybermen and Daleks, a ruse to sacrifice them to the Flux while the Lupari shield ensconces the Sontarans. Claire escapes the Sontarans; Jericho cannot. The two copies rescue Vinder and Diane, and reform the Lupari shield behind the Sontarans, leaving the Flux to consume the Sontarans, Jericho, Daleks and Cybermen, and be absorbed by the Passenger. Azure and Swarm bring the first copy to Atropos to sacrifice her to Time, but Time destroys the duo and reunifies the Doctor, telling her to beware the forces that mass against her, and their master. Using the tunnel doors, Kate and Vinder maroon the Grand Serpent on a small asteroid. Vinder and Bel decide to travel with Karvanista. Diane refuses Dan's date offer, as the Doctor invites Dan to join her and Yaz. She deposits her lost memories deep into the TARDIS interior, deciding to live without them.
Other guest actors in the series include Craig Parkinson as the Grand Serpent, Sara Powell as Mary Seacole, Gerald Kyd as General Logan, Penelope Ann McGhie as Mrs Hayward, Steve Oram as Joseph Williamson, Nadia Albina as Diane, Jonathan Watson as Commander Riskaw and Skaak, and Paul Broughton as Neville.[15][16]
Production
Development
The thirteenth series was in development by November 2019, before the twelfth series premiered;[6] however, due to the COVID-19 pandemic's impact on television, the series' production included only eight episodes, reduced from the previous eleven, with six episodes designated to the thirteenth series, with an additional two airing the following year (in addition to the BBC centenary special).[17] Chibnall said that there were times when they thought they would be unable to do the show under Covid conditions, and because the only other alternative was "tiny little episodes in one room, with no monsters", they decided to do the biggest story they had done in their time on the series.[1]
He would also later reveal on the Radio Free Skaro podcast that the series only narrowly escaped cancellation, with him and Whittaker turning down other job offers to make it work: times when the series was not going to be made and even one hour, at the least, when the series had effectively been axed.[18]
The last episode of the three associated specials, which aired in 2022, would be Whittaker and Chibnall's last as star and executive producer respectively,[19] with both Whittaker and Chibnall announcing their intention to leave the programme in July 2021, near the end of filming.[20] Chibnall stated that both he and Whittaker had originally agreed to only do three series, and that "now our shift is done, and we're handing back the Tardis keys".[21] Series composer Segun Akinola also left, saying that he planned to leave alongside the pair.[22]
Writing
In April 2020, Chibnall confirmed that writing for the series had commenced and continued remotely throughout the COVID-19 pandemic.[23] Chibnall wrote all six episodes of the series, co-writing the fourth episode with Maxine Alderton.[24]
Alderton, who had previously written for the twelfth series episode "The Haunting of Villa Diodati", was originally scheduled to be a major writer for the thirteenth series, with Ed Hime and Pete McTighe, both of whom had written for the eleventh and twelfth series, also writing episodes.[25][26] However, Chibnall later told Doctor Who Magazine in an interview that they originally had some great writers scheduled, but with the series changing into one single serial with fewer episodes, the plans were greatly changed, to minimize turnaround.[25]
According to production executive Tracie Simpson, pre-production for the thirteenth series was originally set to begin in June 2020, with filming set for September 2020;[28] however filming only eventually commenced in November 2020, and ran for ten months,[17][29] even during the time the series trailer was dropped in July 2021 at San Diego Comic-Con.[1]Jamie Magnus Stone directed the first, second, and fourth episodes, and Azhur Saleem directed the third, fifth, and sixth.[25] Filming for the six episodes of the series, along with two of the 2022 specials, had concluded by the end of August 2021.[30]
Production blocks were arranged as follows:[31][32]
The series was first promoted at San Diego Comic-Con on 25 July 2021, where the first teaser trailer was released.[1] Throughout October 2021, a Sontaran ship was projected over Liverpool,[33] and the Doctor's "phone number" was released in a promotional message.[34] On 8 October 2021, the social media accounts for Doctor Who went offline.[35] Whittaker appeared in an episode of The Graham Norton Show on 15 October 2021 during which a second trailer was released.[36]
Broadcast
The series premiered on 31 October 2021 on BBC One,[37] and aired through 5 December 2021.[38] The six-episode series is collectively referred to under the subtitle Flux.[39][40] In the United States the series aired the same day on BBC America,[41] while the streaming service AMC+ carried the streaming video on demand rights to new episodes.[42] In Australia episodes were released same-day on ABC iview and broadcast on ABC TV Plus.[43]
In May 2017, it was announced that due to the terms of a deal between BBC Worldwide and SMG Pictures in China, the company has first right of refusal on the purchase for the Chinese market of future series of the programme until and including Series 15.[44][45] In October 2019, a deal was made between HBO Max and BBC for an additional two series of Doctor Who, including the thirteenth and fourteenth series.[46]
On 24 January 2022, the entirety of Series 13 was released on DVD and Blu-ray in Region 2. The release contained supplementary "special features", which included behind-the-scenes footage, the series trailer, a vlog and an audio commentary for the second episode.[47] Releases in Region 1 and Region 4 followed afterwards on 15 February 2022 and 16 March 2022 respectively.[48][49]
A release collecting all of Whittaker's episodes (including "Twice Upon a Time") was released exclusively for Region 1 following her regeneration and the end of her tenure as the Doctor. The DVD was released on 25 April 2023, with the Blu-ray being released on 5 November 2024.[50][51]
(D,B) indicates a simultaneous DVD and Blu-ray release
Series
Story no.
Episode name
Number and duration of episodes
R2 release date
R4 release date
R1 release date
13
297
Doctor Who – Flux : The Complete Thirteenth Series
The highest viewed episode of the serial was episode 1 "The Halloween Apocalypse" with 5.8 million viewers in its first week, with the lowest being episode 4 "Village of the Angels" with 4.5 million viewers. The average approval rate of the series was 77/100, according to the Appreciation Index, with all episodes scoring in the 70s. The highest scoring being "Village of the Angels" with a 79, and the lowest scoring being "Once, Upon Time" with a 75.[57][58]
The serial did moderately well, finishing in the top 25 every week, achieving a maximum of being the 8th highest watched show with the eighth episode.[4] In terms of overnight viewership "The Halloween Apocalypse" had about 400,000 less than the series 12 premier "Spyfall", having netted 4.4 million viewers. The other episodes had overnight numbers of 3.5-4 million.[59][4]
Doctor Who's thirteenth series has received positive reviews from critics. Series 13 holds an 82% critic approval rating on online review aggregation site Rotten Tomatoes with an average score of 6/10, based on 52 critic reviews.[69]Metacritic calculated a weighted average score of 68 out of 100 from six reviews, indicating "generally favorable reviews".[70]
Both Screen Rant's Edward Cleary and Digital Spy's Morgan Jeffery and Rebecca Cook ranked the series the lowest of the revived era, while considering it Whittaker's best performance as the Doctor. Cleary thought the series felt anti-climatic and that the ending "doesn't pay off",[71] while Jeffery and Cook criticised the writing and lack of direction, calling it "somewhat incomprehensible".[72]Collider's Ben Clark noted that the show had the third lowest rating on IMDb with a 6.5/10, only ahead of Jodie Whittaker's other two series, 11 and 12.[73]
Segun Akinola returned to compose for the thirteenth series making it the third and final series to be scored by Akinola,[22][77] as he left and was replaced by his predecessor Murray Gold.[78]
30 selected pieces of score from this series as composed by Akinola was released on digital music platforms on 30 September 2022 by Silva Screen Records, and was released on a 3-CD set on 11 November 2022.[79] The physical release of the soundtrack includes twelve selected pieces of score from "Revolution of the Daleks" as the third disc, which were originally released on digital music platforms on 2 January 2021.[80][79]
