Doctor Who – The Ultimate Adventure Doctor Who – The Ultimate Adventure Doctor Who – The Ultimate Adventure was a 1989 stage play written by Terrance Dicks, based on the long-running British science fiction television series "Doctor Who". The play was staged at twenty theatres around Britain, commencing 23 March 1989. It initially starred Jon Pertwee (who had played the Third Doctor in the series) as the Doctor. On 29 April Pertwee was ill, so understudy David Banks, who portrayed the Cyber Leader in the series from "Earthshock" onwards, played the Doctor for the matinee and evening performances. Pertwee continued in the role until 3 June
Doctor Who (series 10) the tenth to air following the programme's revival in 2005, and is the thirty-sixth season overall. Preceded by a Christmas special in December 2016, "The Return of Doctor Mysterio", the series is the third and final series starring Peter Capaldi as the Twelfth Doctor, an incarnation of the Doctor, an alien Time Lord who travels through time and space in his TARDIS, which appears to be a British police box on the outside; Capaldi announced in January 2017 that he would be stepping down from the role after the tenth series. The series introduces Pearl Mackie as Bill Potts, the