UNIT is a fictional military organisation from the British science fiction television series Doctor Who and its spin-off series Torchwood and The Sarah Jane Adventures. Operating under the auspices of the United Nations and initially led by Brigadier Lethbridge-Stewart, its purpose is to investigate and combat paranormal and extraterrestrial threats to Earth. Several UNIT personnel played a major role in the original Doctor Who series, and it was a regular feature from The Invasion (1968) until The Seeds of Doom (1976).
Sarah Jane Smith is a fictional character played by Elisabeth Sladen in the long-running BBC Television science fiction series Doctor Who and two of its spin-offs. Sarah Jane is a dogged investigative journalist who first encounters alien time traveller the Doctor while trying to break a story on a top secret research facility, and subsequently becomes his travelling companion on a series of adventures spanning the breadth of space and time. After travelling with The Doctor in four seasons of the show they suddenly part ways, and after this she continues to investigate strange goings-on back on Earth. Over time, Sarah Jane establishes herself as a committed defender of Earth from alien invasions and other threats, occasionally reuniting with The Doctor in the course of her own adventures, all the while continuing to work as a freelance investigative journalist.
K9, occasionally written K-9, is the name of several fictional robotic canines in the long-running British science fiction television series Doctor Who, first appearing in 1977. K9 has also been a central character in three of the series' television spin-offs: the one-off K-9 and Company (1981), The Sarah Jane Adventures (2007–2011) and K9 (2009–2010). Although not originally intended to be a recurring character in the series, K9 was kept in the show following his first appearance because he was expected to be popular with younger audiences. There have been at least four separate K9 units in the series, with the first two being companions of the Fourth Doctor. Voice actor John Leeson has provided the character's voice in most of his appearances, except during season 17 of Doctor Who, in which David Brierley temporarily did so. The character was created by Bob Baker and Dave Martin, to whom rights to the character still belong; consequently, Baker's spin-off series K9, which is not BBC-produced, could not directly reference events or characters from Doctor Who, though it attempted to be a part of that continuity.
The Tenth Doctor is an incarnation of the Doctor, the protagonist of the British science fiction television series Doctor Who. He is played by David Tennant in three series and nine specials. The character has also appeared in other Doctor Who spin-offs. In 2023, Tennant returned to the role, this time as the fourteenth incarnation of the Doctor.
Captain Jack Harkness is a fictional character played by John Barrowman in Doctor Who and its spin-off series, Torchwood. The character first appears in the 2005 Doctor Who episode "The Empty Child" and subsequently features in the remaining episodes of the first series (2005) as a companion to the series' protagonist, the Doctor. Subsequent to this, Jack became the central character in the adult-themed Torchwood, which aired from 2006 to 2011. Barrowman reprised the role for appearances in Doctor Who in its third, fourth, and twelfth series, as well as specials "The End of Time", and "Revolution of the Daleks".
Brian Reginald Miller is a British actor and television personality. He is known for his music and television appearances. Miller was married to Elisabeth Sladen, who was a recurring cast member on the BBC show Doctor Who and also in her own spin off series The Sarah Jane Adventures.
Martha Jones is a fictional character played by Freema Agyeman in the long-running British science fiction television series Doctor Who and its spin-off series, Torchwood. The show's first female black companion, she is a companion of the Tenth Doctor in Doctor Who, after Rose Tyler but before Donna Noble. According to the character's creator Russell T Davies in his non-fiction book Doctor Who: The Writer's Tale, Martha was developed from the beginning with the intention of appearing for the whole of the 2007 series, and to later make guest appearances in subsequent series and crossover appearances in the show's two spin-offs; Martha subsequently made guest appearances in Torchwood series two and in Doctor Who series four in 2008 and special episode "The End of Time" in 2010. Martha was also intended to make guest appearances in the 2009 series of Torchwood and The Sarah Jane Adventures, but could not due to the actress's other work commitments.
The Sarah Jane Adventures is a British science fiction television programme that was produced by BBC Cymru Wales for CBBC, created by Russell T Davies, and starring Elisabeth Sladen. The programme is a spin-off of the long-running BBC science fiction programme Doctor Who and is aimed at a younger audience than Doctor Who. It focuses on the adventures of Sarah Jane Smith, an investigative journalist who, as a young woman, had numerous adventures across time and space with the Doctor. Following Sladen's death in 2011, the BBC confirmed that the show would not return for a sixth series.
"Ghost Machine" is the third episode of the first series of the British science fiction television series Torchwood, which was broadcast on the digital television channel BBC Three on 29 October 2006.
In the long-running BBC television science fiction programme Doctor Who and related works, the term "companion" refers to a character who travels with, or shares adventures with, the Doctor. A companion is generally the series' co-lead character alongside the Doctor for the duration of their tenure, and in most Doctor Who stories acts as an audience surrogate by providing the lens through which the viewer is introduced to the story, and often, the series itself.
Daniel Anthony is an English actor. He is known for his regular roles as Clyde Langer in the Doctor Who spin-off series The Sarah Jane Adventures (2007–2011) and as Jamie Collier in the medical drama Casualty (2013–2014).
Joseph Lidster is an English playwright and screenwriter, best known for his work on the Doctor Who spin-off series Torchwood and The Sarah Jane Adventures.
Eye of the Gorgon is the second serial of the first series of the British science fiction television series The Sarah Jane Adventures. It first aired in two weekly parts on the CBBC channel on 1 and 8 October 2007. The episode makes references to classical mythology.
Lachele J. Carl is an American actress based in England. She is best known for her minor appearances as Trinity Wells in Doctor Who, and its spin-offs The Sarah Jane Adventures, and Torchwood.
"Exit Wounds" is the thirteenth and final episode of the second series of the British science fiction television series Torchwood, and was broadcast on BBC Two on 4 April 2008. It marked the final appearance of Burn Gorman as Owen Harper and Naoko Mori as Toshiko Sato, with both characters being killed off at the end of the episode. It is also the final Torchwood episode in its original format.
The Mark of the Berserker is the fourth serial of the second series of the British science fiction television series The Sarah Jane Adventures. It was first broadcast in two weekly parts on CBBC on 3 and 10 November 2008. Due to Elisabeth Sladen's commitments elsewhere, main character Sarah Jane Smith has a minor role in this serial, making the episodes similar to the 'Doctor-lite' episodes of Doctor Who which do not feature The Doctor heavily, as well as the Torchwood episode "Random Shoes", which had minor roles for most of the main cast.
UNIT is a fictional military organization from the British science fiction television series Doctor Who. Operating under the auspices of the United Nations, its purpose is to investigate and combat paranormal and extraterrestrial threats to the Earth.
Paul Marc Davis is a British actor who has appeared on Doctor Who and three of its spin-off series: Torchwood, The Sarah Jane Adventures, and Class. This makes him the only actor to appear in all four of the Doctor Who series. He was also an executive producer on Sports Day 3D.
Paul Clayton is an English actor, director and author.
