The sonic screwdriver is a fictional multifunctional tool in the British science fiction television programme Doctor Who and its spin-offs, used by the Doctor. Like the TARDIS, it has become one of the icons of the programme, and spin-off media such as The Sarah Jane Adventures and Torchwood have replicated its functions in devices such as the sonic lipstick, sonic blaster, sonic probe, sonic modulator and sonic cane.
Big Finish Productions is a British company that produces books and audio plays based, primarily, on science fiction properties. These include Doctor Who, the characters Judge Dredd and Strontium Dog from 2000 AD, Blake's 7, Dark Shadows, Dracula, Terrahawks, Sapphire & Steel, Sherlock Holmes, Stargate, The Avengers, The Prisoner, Timeslip, and Torchwood.
Alistair Gordon Lethbridge-Stewart, fully Brigadier Sir Alistair Gordon Lethbridge-Stewart, generally referred to simply as the Brigadier, is a fictional character in the British science fiction television series Doctor Who, created by writers Mervyn Haisman and Henry Lincoln and played by Nicholas Courtney. He is one of the founders of UNIT, an international organisation that defends Earth from alien threats, and serves as commander of the British contingent. Presented at first as reluctant to accept the continuing aid of the Doctor, over time the Brigadier became one of the Doctor's greatest friends and his principal ally in defending Earth.
Doctor Who spin-offs refers to material created outside of, but related to, the long-running British science fiction television series Doctor Who.
Harry Sullivan is a fictional character from the British science-fiction television series Doctor Who and is a companion of the Fourth Doctor. Played by Ian Marter, the character appears as a regular during the programme's twelfth season in 1974–1975. Harry appeared in 7 stories.
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.
The Doctor is the protagonist of the long-running BBC science fiction television series Doctor Who. They are a alien Time Lord that travel in the universe and in time using a time travelling spaceship, the TARDIS, often with companions. Since the show's inception in 1963, the character has been portrayed by fourteen lead actors. The transition to each succeeding actor is explained within the show's narrative through the plot device of "regeneration", a biological function of Time Lords that allows a change of cellular structure and appearance with recovery following a fatal injury.
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.
Josephine "Jo" Grant, later Jo Jones, is a fictional character played by Katy Manning in the long-running British science fiction television series Doctor Who. Jo was introduced by Barry Letts and Terrance Dicks in the first episode of Doctor Who's eighth season (1971) as a new companion of series protagonist the Doctor, in his third incarnation. After the Doctor's previous companion Liz Shaw, a scientist and intellectual, the production team looked to introduce a less experienced companion to act as an audience surrogate. Jo appeared in 15 stories.
Ace is a fictional character played by Sophie Aldred in the long-running British science fiction television series Doctor Who. A 20th-century Earth teenager from the London suburb of Perivale, she is a companion of the Seventh Doctor and was a regular in the series from 1987 to 1989 and returned in 2022. She is considered one of the Doctor's most popular companions.
Dorothea "Dodo" Chaplet is a fictional character played by Jackie Lane in the long-running British science fiction television series Doctor Who. An Earth teenager from the year 1966, she was a companion of the First Doctor and a regular in the programme in its third season, from February to July 1966. Only three of the serials in which Dodo appeared as a regular are complete in the BBC archive. Dodo's personality was an unsophisticated, bright and happy one.
The Brain of Morbius is the fifth serial of the 13th season of the British science fiction television series Doctor Who, which was first broadcast in four weekly parts on BBC1 from 3 to 24 January 1976. The screenwriter credit is given to Robin Bland, a pseudonym for writer and former script editor Terrance Dicks, whose original script had been heavily rewritten by his successor as script editor, Robert Holmes. It is the first serial to feature the Sisterhood of Karn.
The Eight Doctors is a BBC Books original novel written by Terrance Dicks and based on the long-running British science fiction television series Doctor Who. It was the first of the Eighth Doctor Adventures range and features the Eighth Doctor and introduces his new companion, Sam Jones. The novel takes place immediately after the 1996 television movie.
"Invasion of the Bane" is the first episode of the British science fiction television series The Sarah Jane Adventures. It was written by series creator Russell T Davies with Gareth Roberts and was directed by Colin Teague. It was originally broadcast on BBC One on 1 January 2007 as a New Year special. Since a full series of the show was commissioned before the script for the episode was written it is not a pilot, despite serving the introductory functions of one.
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. In most Doctor Who stories, the primary companion acts as an audience surrogate by providing the lens through which the viewer is introduced to the story, and often, the series itself.
The Wedding of Sarah Jane Smith is the third serial of the third series of the British science fiction television series The Sarah Jane Adventures. The two-part story was first broadcast on BBC One on 29 and 30 October 2009. It guest stars David Tennant as the Tenth Doctor, marking the first appearance of parent programme Doctor Who's main character in a spin-off show. The episode includes the final scenes David Tennant recorded during his first tenure as the Doctor.
Death of the Doctor is a two-part story of The Sarah Jane Adventures which was broadcast on CBBC on 25 and 26 October 2010. It is the third story of the fourth series. A cross-over story with Doctor Who, story features actress Katy Manning reprising her role as Jo Grant for the first time since the 1973 Doctor Who serial The Green Death and a guest appearance by Matt Smith—Doctor Who's lead actor from 2010 to 2013—as the Eleventh Doctor. In the episode, Tia Karim, a rogue member of UNIT allies with members of the Shansheeth alien race to lure Sarah Jane and Jo into a trap so they can access the Doctor's time machine the TARDIS and change history and Karim can leave Earth, with the cover story of the Doctor's funeral. Exposition at the end of the episode provides updates on the lives of numerous companions from the "classic era" who had gone unaddressed in the revived era. This story was the last to feature Sarah Jane and the Doctor together on-screen.
