The Doctor (Doctor Who) Time Lords a fixed number of twelve regenerations, meaning that every Time Lord had a total of thirteen incarnations including the original. The plot of "The Time of the Doctor" involves the Doctor receiving a new cycle of regenerations from the Time Lords before his expected demise, triggering the regeneration into the Twelfth Doctor, played by Peter Capaldi. The origins of the programme were explored in the docudrama "An Adventure in Space and Time" as part of the 50th anniversary celebrations of "Doctor Who", which starred David Bradley as William Hartnell. Although Time Lords resemble humans, their physiology differs in
Doctor Who and the Pescatons Doctor Who and the Pescatons Doctor Who and the Pescatons (commonly shortened to The Pescatons) is an audio play in two episodes based on the long-running British science fiction television series "Doctor Who". It is written by Victor Pemberton, and stars Tom Baker as the Fourth Doctor, Elisabeth Sladen as Sarah Jane Smith and Bill Mitchell as Zor. The Doctor and Sarah Jane arrive on a beach by the Thames Estuary at night, and discover a metallic seaweed there. The Doctor consults with Professor Emerson, who says that three expeditions to recover a recent meteorite from the bottom of the