The Doctor (Doctor Who) footage. Tom Baker did reappear, but as "the Curator", an ambiguously different character who he was not credited for playing. A voice actor, John Guilor, recorded a line of audio impersonating the First Doctor, for which he was credited as "Voice Over Artist". In other multi-Doctor stories, the multiple actors are all credited as "The Doctor", the exception being "The Three Doctors" (1972–73), which credited William Hartnell, Patrick Troughton and Jon Pertwee as "Doctor Who" as the 1972 serial preceded the practice of crediting the character as "The Doctor". In "Human Nature" (2007), the plot involves the Tenth Doctor altering
History of Doctor Who Doctor with his last episode being the 2013 Christmas special. On 4 August 2013 in a live TV special, Peter Capaldi was revealed as the Twelfth Doctor. It was announced on 4 August 2013 on a live BBC special entitled "Doctor Who Live: The Next Doctor" that Peter Capaldi would portray the twelfth incarnation of the Doctor in 'Doctor Who'. During his appearance in the special, he said that he had been a fan of the series; a letter that he had written to the Radio Times at the age of 15 about the show was read aloud. Capaldi had