The Abominable Snowmen

The Abominable Snowmen is the mostly missing second serial of the fifth season of the British science fiction television series Doctor Who, which originally aired in six weekly parts from 30 September to 4 November 1967. In this serial, the Second Doctor (Patrick Troughton), Jamie McCrimmon (Frazer Hines) and Victoria Waterfield (Deborah Watling) arrive in Tibet in 1935, where they face off against the malicious Great Intelligence and its robot Yeti, who seek to conquer the world. This serial marks the introduction of both antagonists to the series, with both recurring in subsequent Doctor Who media.

The serial was written by Henry Lincoln and Mervyn Haisman, who, after discussing the series with lead actor Patrick Troughton, decided to base a story set on Earth that featured yeti. This led to the creation of the robot Yeti and subsequently the Intelligence. Filming for the serial was done on location in Nant Ffrancon Pass in Snowdonia, and at the time was the longest location shoot performed for the series.

The serial is considered one of the best in the series by fans, with critics highlighting its atmosphere and the Yeti, though some felt the Yeti were too cute to be intimidating antagonists. Only one of the serial's six episodes survives, with the rest remaining missing. Due to the predicted popularity of the serial, a sequel, dubbed The Web of Fear, was commissioned before The Abominable Snowmen had finished airing, and would air in 1968.