The Ambassadors of Death is the third serial of the seventh season of the British science fiction television series Doctor Who, which was first broadcast in seven weekly parts from 21 March to 2 May 1970. Written by Trevor Ray, Terrance Dicks and Malcolm Hulke from a story by David Whitaker, the serial was directed by Michael Ferguson.
In the serial, the Third Doctor (Jon Pertwee) and the United Nations Intelligence Taskforce (UNIT), including Liz Shaw (Caroline John) and Brigadier Lethbridge-Stewart (Nicholas Courtney), investigate the disappearance of astronauts who have lost contact with Earth. They become involved in a conspiracy meet alien ambassadors who have been sent to Earth, who seem to have ill intentions.
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