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
David Bradley (director) in Chicago (and which also starred Charlton Heston), he was hired as a directing intern by Metro-Goldwyn-Mayer in 1950. After the teen drama "Dragstrip Riot" (1958), he went on to direct "Madmen of Mandoras", padded for television into the infamous "They Saved Hitler's Brain", which proved to be his final output. Bradley later taught film studies at UCLA and Santa Monica City College. David Bradley (director) David Shedd Bradley (6 April 1920 in Winnetka, Illinois – 19 December 1997 in Los Angeles, California) was an American motion picture director, actor, film collector, and university instructor. David Shedd Bradley was a