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
Dreamland (Doctor Who) and is married to David Tennant who played the tenth Doctor. She portrayed Tanya Webster in the audio drama "Red Dawn" with Davison reprising his role as the Fifth Doctor, and she narrated the Tenth Doctor audio-book "Snowglobe 7". Lisa Bowerman (Saruba Velak) played the Cheetah Person Karra in the 1989 "Doctor Who" serial "Survival" (the last serial of the classic series to be broadcast). Since 1998, she has also played Bernice Summerfield in the ongoing Big Finish audio drama series and in occasional "Doctor Who" audio stories. Veteran actor David Warner has also appeared in numerous Big Finish audio