Genre: Science Fiction, Fantasy, Drama
Premise: An eccentric yet compassionate extraterrestrial Time Lord zips through time and space to solve problems and battle injustice across the universe, traveling via the TARDIS (Time and Relative Dimensions in Space), which is his old and occasionally unreliable spaceship that resembles a blue police phone box (but changes its appearance depending on its surroundings) and is much, much larger inside than outside.
S06, E12 (First Aired: Sep. 24, 2011)
While on a farewell tour in the last days of his life, the Doctor visits an old friend, where he discovers the Cybermen siphoning energy from a department store.
S06, E13 (First Aired: Oct. 1, 2011)
Chaos results when River Song refuses to kill the Doctor, sending them into an alternate timeline where all of time runs simultaneously.