Doctor Who: The Mutants

The Mutants is the fourth serial of the ninth season of the British science fiction television series Doctor Who, which was first broadcast in six weekly parts on BBC1 from 8 April to 13 May 1972. The serial is set on and high above the Earth colony world Solos in the 30th century. In the serial, the Marshal of Solos (Paul Whitsun-Jones) plots to change Solos' atmosphere to make it breathable for humans but not for the native Solonians. At the same time, the alien time traveller the Third Doctor (Jon Pertwee) delivers a set of tablets containing lost information about the Solonians' life cycle to the Solonian Ky (Garrick Hagon).