The Three Doctors (Doctor Who)
Doctor Who serial
The Three Doctors is the first serial of the tenth season of the British science fiction television series Doctor Who, first broadcast in four weekly parts on BBC1 from 30 December 1972 to 20 January 1973.
In the serial, the solar engineer Omega (Stephen Thorne), the creator of the experiments that allowed the Time Lords to travel in time, seeks revenge on the Time Lords after he was left for dead in a universe made of antimatter. The Time Lords recruit the time travellers the First Doctor (William Hartnell), the Second Doctor (Patrick Troughton), and the Third Doctor (Jon Pertwee) for help when Omega drains power throughout the universe, threatening all of existence.
The serial opened the tenth anniversary year of the series, and features the first three Doctors all appearing in the same serial. This makes it the first Doctor Who story in which an earlier incarnation of the Doctor returns to the show. It was also Hartnell's last appearance as the First Doctor prior to his death in 1975. Omega would later return to the series in the 1983 serial Arc of Infinity, the 2020 episode "The Timeless Children", and the 2025 two-parter "Wish World" / "The Reality War". The story also marks the end of the Doctor's exile to Earth by the Time Lords, ending a plot device begun prior to Pertwee's tenure, from 1969's The War Games.
Plot
A superluminal signal is sent to Earth, carrying with it an energy blob that seems intent on capturing the Doctor, but has already mysteriously abducted two individuals: a local game warden, and scientific researcher Dr. Tyler.
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The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Sep 11, 2026. The linked authority identifier is Q626989. The first chronological checks are 1972, 1973, 1975 and 1983.
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This entry incorporates text from “The Three Doctors (Doctor Who)” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.