The time loop or temporal loop is a plot device in fiction whereby characters re-experience a span of time which is repeated, sometimes more than once, with some hope of breaking out of the cycle of repetition. The term "time loop" is sometimes used to refer to a causal loop; however, causal loops are unchanging and self-originating, whereas time loops are constantly resetting: when a certain condition is met, such as a death of a character or a clock reaching a certain time, the loop starts again, possibly with one or more characters retaining the memories from the previous loop.
World Game is a BBC Books original novel written by Terrance Dicks and based on the long-running British science fiction television series Doctor Who. It features the Second Doctor and the Lady Serena and is set during "Season 6B". It is also a partial sequel to another Dicks' Past Doctor Adventure, Players and documents the return of the Countess.
The Devil Goblins from Neptune is a BBC Books original novel written by Martin Day and Keith Topping and based on the long-running British science fiction television series Doctor Who. It was the first novel published in the Past Doctor Adventures range and features the Third Doctor, UNIT, The Brigadier, and Liz Shaw.
The Empire of Glass is a Virgin Missing Adventures original novel written by Andy Lane based on the long-running British science fiction television series Doctor Who. It features the First Doctor, Steven Taylor, Vicki and Irving Braxiatel.
The Witch Hunters is a BBC Books original novel written by Steve Lyons and based on the long-running British science fiction television series Doctor Who. It features the First Doctor, Barbara, Ian, and Susan.
The Final Sanction is a BBC Books original novel written by Steve Lyons and based on the long-running British science fiction television series Doctor Who. It features the Second Doctor, Zoe and Jamie. It was the last book in the series to use the "silver" version of the film logo.
Combat Rock is a BBC Books original novel written by Mick Lewis and based on the long-running British science fiction television series Doctor Who. It features the Second Doctor, Victoria and Jamie.
The Scales of Injustice is a Virgin Missing Adventures original novel written by Gary Russell based on the long-running British science fiction television series Doctor Who. It features the Third Doctor, Liz Shaw and UNIT.
Salvation is a BBC Books original novel written by Steve Lyons and based on the long-running British science fiction television series Doctor Who. It features the First Doctor, Dodo, and Steven.
The Wages of Sin is a BBC Books original novel written by David A. McIntee and based on the long-running British science fiction television series Doctor Who. It features the Third Doctor, Liz Shaw and Jo Grant. The events of the novel apparently take place immediately following The Three Doctors.
City at World's End is a BBC Books original novel written by Christopher Bulis and based on the long-running British science fiction television series Doctor Who. It features the First Doctor, Barbara, Ian, and Susan.
Wolfsbane is a BBC Books original novel written by Jacqueline Rayner and based on the long-running British science fiction television series Doctor Who. It features both the Fourth and Eighth Doctors, Sarah Jane, and Harry, although the two Doctors never meet- their sequences taking place a month apart as the Eighth tackles the main crisis with Harry while the Fourth and Sarah tie up the loose ends a month later when they attempt to return to pick Harry up- and with nobody ever realising that the Doctors are the same person due to the Eighth's current amnesia.
Psi-ence Fiction is a BBC Books original novel written by Chris Boucher and based on the long-running British science fiction television series Doctor Who. It features the Fourth Doctor and Leela.
The Eleventh Tiger is a BBC Books original novel written by David A. McIntee and based on the long-running British science fiction television series Doctor Who. It features the First Doctor, Ian, Barbara, and Vicki.
Deadly Reunion is a BBC Books original novel written by Terrance Dicks and Barry Letts and based on the long-running British science fiction television series Doctor Who. It features the Third Doctor, Jo, and UNIT.
Bunker Soldiers is a BBC Books original novel written by Martin Day and based on the long-running British science fiction television series Doctor Who. It features the First Doctor, Steven and Dodo.
Byzantium! is a BBC Books original novel written by Keith Topping and based on the long-running British science fiction television series Doctor Who. It features the First Doctor, Ian, Barbara, and Vicki.
Ten Little Aliens is a BBC Books original novel written by Stephen Cole and based on the long-running British science fiction television series Doctor Who. It features the First Doctor, Ben and Polly.
Dancing the Code is an original novel written by Paul Leonard and based on the long-running British science fiction television series Doctor Who. It features the Third Doctor, Jo and UNIT. It takes place before the Virgin Missing Adventure Speed of Flight, also by Paul Leonard.
Twilight of the Gods is an original novel written by Christopher Bulis and based on the long-running British science fiction television series Doctor Who. The novel features the Second Doctor, Jamie and Victoria. It is a sequel to the 1965 serial The Web Planet.
