Doctor Who: Twice Upon a Time
As the Twelfth Doctor nears regeneration, he stumbles on his first incarnation, also refusing to change. It takes a captain, a glass avatar and a familiar face to convince the Doctors the universe still needs them.
- Genre: Science Fiction, Adventure
- Studio: BBC
- Keyword: time travel, alien, christmas, war
- Cast: Peter Capaldi, David Bradley, Mark Gatiss, Pearl Mackie, Nikki Amuka-Bird, Toby Whithouse