Heaven Sent (in-universe)

Heaven Sent was the eleventh episode of the ninth series of Doctor Who. It followed Face the Raven.

Its synopsis noted that the episode featured the Doctor "Trapped in a world unlike any other, the Doctor faces the...". By 10 May 2020, the episode was available on BBC iPlayer along with the rest of series 9. Petronella Osgood had started watching the episode sometime before then. (WC: The Zygon Isolation)

Behind the scenes
This is a version of Heaven Sent that exists within the Doctor's universe.