Patrick Troughton plays the second Doctor in this four-episode adventure from 1967, set on Earth's moon and featuring a return appearance by the emotionless Cybermen. The year is 2070, and Earth's weather is controlled by a device called the Gravitron, based on the Moon and manned by an international team of experts. The TARDIS arrives to find an invasion force from the planet Mondas, home of the Cybermen! The soundtrack presented here includes linking narration by Frazer Hines, who played Jamie in the story itself.
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