Attack of the Cybermen
''Attack of the Cybermen'' is the first serial of the 22nd season of the British science fiction television series ''Doctor Who'', which was first broadcast in two weekly parts on 5 and 12 January 1985. It was credited to the pseudonymous author "Paula Moore"; the level of contributions made by Paula Woolsey, Eric Saward and Ian Levine have been disputed. It is the second and final serial to be directed by Matthew Robinson.Set in London in 1985 and the planet Telos in the future, in the serial the Cybermen intend to change the course of history by destroying Earth with Halley's Comet in 1985, which would prevent the destruction of the Cybermen's original home planet Mondas.
Beginning with this serial and continuing for the remainder of Season 22, episodes were 45 minutes in length (as opposed to previous episodes which were 25 minutes long); for syndication, in some markets, this serial is re-edited into four 25-minute segments. Provided by Wikipedia