Doctor Who: Rosa

"Rosa" is the third episode of season eleven of the relaunch of the British science fiction television series Doctor Who, which is also season thirty-seven of the entire franchise. It is the 850th episode of the entire series overall. The episode was directed by Mark Tonderai with a teleplay written by Malorie Blackman and Chris Chibnall. It first aired on BBC America on Sunday, October 21st, 2018.