"Mission to the Unknown" is the second serial of the third season of the British science fiction television series Doctor Who. Written by Terry Nation and directed by Derek Martinus, the single episode was broadcast on BBC1 on 9 October 1965. The only standalone regular episode of the show's original run, it serves as an introduction to the 12-part story The Daleks' Master Plan. It is notable for the complete absence of the regular cast and the TARDIS; it is the only serial in the show's history not to feature the Doctor at all. The story focuses on Space Security Agent Marc Cory and his attempts to warn Earth of the Daleks' plan to take over the Solar System.
A production still showing the Daleks colluding with the masters of the Fifth Galaxy. Critics praised the costumes and set design.
Mission to the Unknown
For the design of the Daleks' conference room, Raymond Cusick was inspired by the Nuremberg rallies.
The design of Malpha received critical praise, and was considered the biggest challenge of the episode's 2019 recreation.
The third season of British science fiction television series Doctor Who began on 11 September 1965 with the story Galaxy 4 and ended on 16 July 1966 with The War Machines. Only 17 out of 45 episodes survive in the BBC archives; 28 remain missing. As a result, only three serials are complete.
Cover art of the Region 2 DVD release for first serial of the season