Second Doctor
The Second Doctor is an incarnation of the Doctor, the protagonist of the BBC science fiction television series "Doctor Who". He was portrayed by character actor Patrick Troughton.
Doctor Who (series 2)
The second series premiered on 15 April 2006 with "New Earth", and concluded after 13 episodes on 8 July 2006 with "Doomsday". "Doctor Who Confidential" also aired alongside each episode of the series, continuing on from the previous series.