2013 marks the 50th anniversary of Doctor Who, the longest running science fiction show in history! To celebrate, the BBC is releasing a curated selection of the best of each of this storied program's eleven Doctors. This initial release showcases Doctor Who's first four doctors, including William Hartnell, Patrick Troughton, Jon Pertwee, and Tom Baker, spanning from 1963-1981, a period of almost twenty years! The Doctors Revisited includes a profile of each Doctor and one classic story for each, including: The Aztecs, Tomb of the Cyberman, Spearhead from Space, and Pyramids of Mars.