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
Pendragon: Journal of an Adventure through Time and Space actually humans at all, but rather, human-shaped guardian spirits created by something called Solara: the accumulated living energy of all positive sentient knowledge and creativity. Contrarily, Saint Dane is a spirit arisen from the dark antithesis of Solara. Reuniting one last time, Bobby and the Travelers confront Saint Dane in a final battle on Third Earth in order to begin Halla's process toward recovery at last. Pendragon: Journal of an Adventure through Time and Space Pendragon: Journal of an Adventure through Time and Space, commonly known as Pendragon, is a series of ten young-adult science fiction and fantasy novels by