Synopsis by Hal Erickson
Written by Kit Pedler and Gerry Davis, the four-part "The Tenth Planet" was the first "transitional" adventure in the Doctor Who canon. When the TARDIS docks at the South Pole in December 1986, the Doctor (William Hartnell) and his companions find that they've arrived just in time to witness a missile launching -- but they'd better get out of the way lest they be launched as well. This crisis is but a prologue for an even greater danger in the form of the dreaded Cybermen. The first of four episodes, Doctor Who: The Tenth Planet, Episode 1 first aired on October 8, 1966.