Publisher's Synopsis
Patrick Troughton plays the second Doctor in this four-episode adventure from 1967, set on the 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 the base in the grip of a plague epidemic which is drastically reducing the personnel. Before long an even greater menace is proved to be responsible an invasion force from the planet Mondas, home of the Cybermen "
