One of the most popular shows in British TV history, this long-running, shoestring-budgeted sci-fi saga followed the exploits of "the Doctor," a maverick scientist and adventurer who traversed space and time in the TARDIS, a high-tech craft disguised (well, stuck, actually) as a London police box. William Hartnell, Patrick Troughton, Jon Pertwee, Tom Baker, Peter Davison, Colin Baker, and Sylvester McCoy starred as the various eccentric incarnations of the Doctor during the series's initial 1963-1989 run.A rash of mysterious disappearances in and around London soon has the Doctor (Sylvester McCoy) and Ace facing the deadly interstellar hunters known as the Cheetah People... and the old enemy behind their attacks... in what would prove to be the final episode.