New Series Prologue

New Series Prologue marked the "start" of the ninth series of Doctor Who, although it was not considered an episode proper. It was succeeded by the first episode of the series, The Magician's Apprentice.

It featured the Doctor. By 10 May 2020, the episode was available on BBC iPlayer along with the rest of series 9. (WC: The Zygon Isolation)

Important note
This is a in-universe counterpart of the real world Doctor Who webisode Prologue that exists within the Doctor's universe. It was a visual meta-fictional cameo in The Zygon Isolation, where Petronella Osgood and her Zygon duplicate scroll through BBC iPlayer searching for something to watch.