Doctor Who
Thirteen actors have headlined the series as the Doctor. The transition from one actor to another is written into the plot of the show with the concept of regeneration into a new incarnation, a plot device in which a Time Lord "transforms" into a new body when the current one is too badly harmed to heal normally. Each actor's portrayal is unique, but all represent stages in the life of the same character. Together, they form a single lifetime with a single narrative. The time-travelling feature of the plot means that different incarnations of the Doctor occasionally meet. The Doctor is currently portrayed by Jodie Whittaker, who took on the role after Peter Capaldi's exit in the 2017 Christmas special "Twice Upon a Time".
Doctor Who – Main Range
The Doctor Who – Main Range series consists of full-cast audiobook adventures based on the British science fiction television programme "Doctor Who", produced by Nicholas Briggs and Big Finish Productions and starring one of the original actors to play The Doctor on television in the classic era of the programme. The main audio series currently feature the Fifth, Sixth and Seventh Doctors, and have since developed the pattern of thirteen releases per year, one every month with two in September or December.