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 (2013 specials) Davies and John Barrowman, with David Tennant's wife Georgia Moffet and their children also guest starring. "The Day of the Doctor" formed the centerpiece of the celebrations, which encompassed programmes across all of the BBC's platforms, including "An Adventure in Space and Time", a "Culture Show" special entitled "Me, You and Doctor Who" presented by Matthew Sweet that explores the wider cultural significance of the show. CBBC broadcast a show called "12 Again" in which past and present stars of the show recounted their memories, Professor Brian Cox delivered a televised lecture on the science of "Doctor Who", and BBC