<Tr> <Td_colspan="8"> In a flash forward, the Doctor stumbles from the TARDIS into a snowy landscape and begins regenerating . Earlier, the Doctor proposed to test Missy by having her answer a distress call . They arrive via TARDIS on a colony ship reversing away from a black hole . They are held at gunpoint by Jorj, who demands to know which of them is human, and Jorj shoots Bill . The Doctor, Missy, and Nardole learn that a few days ago, some of the crew had gone down to the ship's lower decks but never returned . Jorj claims the ship is otherwise empty, but the Doctor shows there are thousands of humans, descendants of the crew: due to time dilation, time moves much faster on the decks closer to the black hole . Bill awakens in a hospital, having been fitted with a replacement heart . Razor, the hospital caretaker, explains that some of the patients are waiting to be "upgraded" to escape the ship's polluted air . Years later, they see footage of the Doctor coming down the lift, while only a few minutes have passed for the Doctor . The Doctor, Nardole and Missy arrive and discover the origin of the colony ship: Mondas . Razor approaches Missy and reveals himself to be her previous incarnation, formerly known as the Master . The Doctor and Nardole find a Cyberman who reveals itself as Bill . </Td> </Tr> <Tr> <Th> 275b </Th> <Td> 12 </Td> <Td> "The Doctor Falls" </Td> <Td> Rachel Talalay </Td> <Td> Steven Moffat </Td> <Td> 1 July 2017 (2017 - 07 - 01) </Td> <Td> 5.29 </Td> <Td> 83 </Td> </Tr> <Tr> <Td_colspan="8"> Escaping to a higher floor of the ship, the Doctor tries to comfort Bill, who has retained her humanity, though this is wearing thin . This floor of the ship is a simulated countryside, where the group helps defend the villagers from the oncoming Cybermen . Knowing they are outnumbered, the Doctor attempts to convince Missy and the Master to help him . They refuse, though Missy seems conflicted . Hoping to save the villagers, the Doctor tells Nardole to take them to another floor while he sacrifices himself . Bill opts to stay with the Doctor, and Nardole says goodbye, taking the villagers to safety . Elsewhere, before escaping to their TARDIS, Missy betrays the Master to help the Doctor by stabbing him in the back, triggering the regeneration process . He shoots her in return, killing her and preventing her regeneration . The Doctor fights off the Cybermen, but is severely wounded in the process . He proceeds to blow up the whole floor, killing himself . Bill survives, with Heather appearing before her . They kiss, and Heather reveals she has changed Bill into her species so she could live on . The two take the Doctor's body back to his TARDIS, before she and Heather leave to see the universe together . The Doctor awakens as the regeneration process begins . He attempts to stop it, and exits the TARDIS into a snowy landscape, where he is greeted by the First Doctor . </Td> </Tr> <Tr> <Td_colspan="13"> Special (2017) </Td> </Tr>

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