Twice Upon a Time (Doctor Who) The Doctor paraphrases philosopher Bertrand Russell when he advises his future self that "hate is always foolish and love is always wise". Peter Capaldi reprised his role as the Twelfth Doctor. On 30 January 2017, he confirmed that the tenth series would be his last, and that he was set to leave after the 2017 Christmas special. The episode also sees the introduction of Jodie Whittaker as the Thirteenth Doctor, whose casting was announced on 16 July 2017. David Bradley appears in the episode as the First Doctor, having previously portrayed William Hartnell in the docudrama "An Adventure in Space
Doctor Who in Australia episode ended on BBC One. Immediately afterwards, each episode became available on iView for one week, with an ABC2 encore broadcast at 8:30 the following (Monday) night. Later in the year, ABC1 took a live simulcast from the BBC to screen "Doctor Who Live: The Next Doctor", the half hour special in which the actor chosen to play the Twelfth Doctor was revealed before a live studio audience, on Monday 5 August at 4am. The special was replayed on ABC2 at 8:30pm on that same day. Purposefully timed as part of the ABC's recognition of "Doctor Who's" 50th Anniversary celebrations,