Behind the scenes
- Hell's Belles is a real novel written by Paul Magrs, and published by Headline Review (and as of 2020, Snowbooks Ltd), however the real life counterpart is not covered by this wiki.
Spoilers are precisely defined here. Rules vary by the story's medium. Info from television stories can't be added here until after the top or bottom of the hour, British time, closest to the end credits roll on BBC One. Therefore, fans in the Americas who are sensitive to spoilers should avoid Tardis on Sundays until they've seen the episode.