The Witch's Familiar (in-universe)

The Witch's Familiar was the second episode of the ninth series of Doctor Who. It followed The Magician's Apprentice and was succeeded by Under the Lake.

It featured the Doctor and the Daleks. Its synopsis mentioned that the Doctor was "trapped and alone" on a "terrifying planet". By 10 May 2020, the episode was available on BBC iPlayer along with the rest of series 9. (WC: The Zygon Isolation)

Behind the scenes
This is a version of The Witch's Familiar that exists within the Doctor's universe.