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
The Invasion (Doctor Who) The Invasion (Doctor Who) The Invasion is the partly missing third serial of the sixth season of the British science fiction television series "Doctor Who", which was first broadcast in eight weekly parts from 2 November to 21 December 1968. It marks the first appearance of UNIT and, notably, Corporal Benton, later to become a Sergeant during the Third Doctor era. It was the first incomplete "Doctor Who" serial to be released with full-length animated reconstructions of its two missing episodes. After escaping the Land of Fiction, the Doctor, Jamie and Zoe find that they have materialized near the Moon