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 from 8 April to 13 May 1972.
The Mutants is also the title used by the production team for the series' second serial, which introduced the Daleks. To distinguish between the two, the earlier serial is usually referred to as The Daleks. Sometimes both stories are referred to as The Mutants, further distinguished by the production codes — (B) for the former and (NNN) for the latter.
Read more about The Mutants: Plot, Production, Outside References, In Print, VHS, DVD and CD Release