Terminus is the fourth serial of the 20th season of the British science fiction television series Doctor Who, which was originally broadcast in four twice-weekly parts on BBC1 from 15 to 23 February 1983.
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.
Dimensions in Time is a charity special crossover between the British science fiction television series Doctor Who and the soap opera EastEnders. The special was broadcast in two parts on 26 and 27 November 1993 and was filmed on location at Greenwich and the EastEnders Albert Square set.
Omega is a fictional character created by Bob Baker and Dave Martin for the British science fiction television series, Doctor Who. In the context of the series, Omega is known as one of the founders of the Time Lords of the planet Gallifrey, and is a revered figure in Time Lord history together with the equally legendary Rassilon; the Third Doctor refers to him as the Time Lords' "greatest hero". Omega first appeared in the 10th anniversary story, The Three Doctors.
Mawdryn Undead is the third serial of the 20th season of the British science fiction television series Doctor Who. It was originally broadcast in four twice weekly parts on BBC1 from 1 to 9 February 1983.
The Deadly Assassin is the third serial of the 14th season of the British science fiction television programme Doctor Who, which was first broadcast in four weekly parts on BBC1 from 30 October to 20 November 1976. It is the first serial in which the Doctor is featured without a companion, and the only such story for the classic era.
The Five Doctors is a special feature-length episode of the British science fiction television series Doctor Who, produced in celebration of the programme's 20th anniversary. It had its world premiere in the United States, on the Chicago PBS station WTTW and various other PBS member stations on 23 November 1983, the anniversary date. It was transmitted on BBC1 in the United Kingdom two days later.
Tegan Jovanka is a fictional character played by Janet Fielding in the long-running British science fiction television series Doctor Who. An Australian airline stewardess and a native of Brisbane who was a companion of the Fourth and Fifth Doctors, she was a regular in the programme from 1981 to 1984. Tegan appeared in 20 stories.
Nyssa is a fictional character in the long-running British science fiction television series Doctor Who. She is played by Sarah Sutton. Although Nyssa was created by writer Johnny Byrne for the single Fourth Doctor serial The Keeper of Traken, the production team subsequently decided she should be retained as a continuing character. Nyssa returned in the following serial, Logopolis, in which the Fourth Doctor regenerated, and remained as a companion of the Fifth Doctor. She was a regular in the programme from 1981 to 1983.
Logopolis is the seventh and final serial of the 18th season of the British science fiction television series Doctor Who, which was first broadcast in four weekly parts on BBC1 from 28 February to 21 March 1981. It was Tom Baker's last story as the Fourth Doctor and marks the first appearance of Peter Davison as the Fifth Doctor and Janet Fielding as new companion Tegan Jovanka.
Leela is a fictional character played by Louise Jameson in the long-running British science fiction television series Doctor Who. She was a companion of the Fourth Doctor and a regular in the programme from 1977 to 1978. Leela appeared in nine stories.
Castrovalva is the first serial of the 19th season of the British science fiction television series Doctor Who, which was first broadcast in four twice-weekly parts on BBC1 from 4 to 12 January 1982. It was the first full serial to feature Peter Davison as the Fifth Doctor. The title is a reference to the lithograph Castrovalva by M. C. Escher, which depicts the town Castrovalva in the Abruzzo region, Italy.
The Fifth Doctor is an incarnation of the Doctor, the protagonist of the British science fiction television series Doctor Who. He is portrayed by Peter Davison.
Omega is a Big Finish Productions audio drama based on the long-running British science fiction television series Doctor Who.
The Fourth Doctor is an incarnation of the Doctor, the protagonist of the British science fiction television series Doctor Who. He is portrayed by Tom Baker.
Time-Flight is the seventh and final serial of the 19th season of the British science fiction television series Doctor Who, which was first broadcast in four twice-weekly parts on BBC1 from 22 to 30 March 1982.
Cold Fusion is an original novel written by Lance Parkin and based on the long-running British science fiction television series Doctor Who. It features the Fifth Doctor, with Adric, Nyssa, and Tegan, immediately after Castrovalva. Also appearing is the Seventh Doctor, with Chris and Roz, from between the Virgin New Adventures novels Return of the Living Dad and The Death of Art. It was the only one of the Virgin Doctor Who novels to feature more than one Doctor.
The Time Lords are a fictional humanoid species originating on the planet Gallifrey, seen in the British science fiction television series Doctor Who. Time Lords are so called because they are able to travel in and manipulate time through prolonged exposure to the time vortex.
The twentieth season of British science fiction television series Doctor Who began on 3 January 1983 with the story Arc of Infinity, and ended 16 March 1983 with The King's Demons. A 20th Anniversary special, The Five Doctors, followed in November 1983. John Nathan-Turner produced this series, with Eric Saward script editing.
