- Doctor Who (season 12)
Doctor Who season 12 Country of origin United Kingdom No. of episodes 20 Broadcast Original channel BBC One Original run 28 December 1974– 10 May 1975 Home video release DVD release Region 1 6 August 2002 -
9 August 2010
Region 2 8 April 2002 -
2 November 2010
Region 4 3 June 2002 -
7 October 2010
Series chronology ← Previous
List of Doctor Who serials
Barry Letts served as producer for Robot, after which he was succeeded by Philip Hinchcliffe. Robert Holmes took over from Terrance Dicks as script editor. All serials in this season continue directly one after the other, tracing one single problematic voyage of the TARDIS crew. Despite the continuity, each serial is considered its own standalone story.
Story No. Serial Title Directed by Written by UK viewers
Original air date Production
075 1 "Robot" Christopher Barry Terrance Dicks 10.1 28 December 1974 - 18 January 1975 4A With the newly regenerated Doctor, UNIT have to contend with the theft of the plans for the new disintegrator gun by what seems to be a mechanical monster. 076 2 "The Ark in Space" Rodney Bennett Robert Holmes 11.1  25 January - 15 February 1975 4C The Doctor, Sarah, and Harry travel to an ark where they encounter the Wirrns. 077 3 "The Sontaran Experiment" Rodney Bennett Bob Baker &
10.8 22 February – 1 March 1975 4B On a future Earth, the Fourth Doctor, Harry Sullivan, and Sarah Jane Smith discover Styre, a Sontaran warrior. 078 4 "Genesis of the Daleks" David Maloney Terry Nation 9.6 8 March - 12 April 1975 4E At the request of the Time Lords, the Doctor, Sarah, and Harry travel to Skaro where they to change the history of the Daleks. 079 5 "Revenge of the Cybermen" Michael E. Briant Gerry Davis 9.0  19 April - 10 May 1975 4D the Doctor, Harry and Sarah find themselves on Space Station Nerva but millennia earlier, where a lethal infection is spreading through the crew.
The stories were released on DVD individually in between 2002 and 2010.
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