Chronoclasm was the fourth and final story in the audio anthology Jago & Litefoot: Series Three, produced by Big Finish Productions. It was written by Andy Lane and featured Christopher Benjamin as Henry Gordon Jago and Trevor Baxter as George Litefoot.
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- Henry Gordon Jago - Christopher Benjamin
- George Litefoot - Trevor Baxter
- Leela - Louise Jameson
- Ellie Higson - Lisa Bowerman
- Sergeant Quick - Conrad Asquith
- Professor Payne - Philip Bretherton
- Nikola Tesla - Duncan Wisbey
- The Time Eaters - Joanna Monro / Wendy Padbury
- Professor Claudius Dark - Colin Baker
- According to Payne, the time period is "1890, give or take a few years." He is from 2000 years in the future.
- 2011 is a stable point in time.
- Payne uses time bombs, accelerating centuries in seconds.
- The Time Eaters were like crabs existing in the event horizon of a black star or sun, feeding off fluctuations in the time gradients, converting time to energy. They want to use a time break to leave the black star and feed on all time.
- Payne lost his love Cenya during a gravity spike. The Time Eaters later assume her form.
- Sergeant Quick tells Professor Litefoot that the Metropolitan Police Service is issuing the cover story that the metal spheres are a stunt by a group of Bohemian sculptors.
- According to Quick, the police have interviewed the Irish author and playwright, Oscar Wilde.
- As a result of the time breaks, Leela and Jago find a 20th century radio playing a BBC shipping broadcast. They later see a British Spitfire and a German Messerschmitt fighting each other in the sky over 1890s London which had come from the Blitz in the early 1940s.
- Payne has brought a sabre-toothed tiger to London in the 1890s.
- The version of Jago from several hours in the future, which is eventually rendered an alternative timeline, is killed by one of Payne's traps.
- Friendship is rare among the Sevateem. They believe spirits walk the world until a sacrifice is made in their name.
- Morse code is mentioned.
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- Leela refers to Johnny Skipton. (AUDIO: Dead Men Tales)
- Leela previously saw recreations of a British Spitfire and a German Messerschmitt in the Morovanian Museum on Morovania Minor. (AUDIO: The Renaissance Man)
- Leela once again refers to members of the Metropolitan Police Service as "blue guards." (TV: The Talons of Weng-Chiang; AUDIO: The Renaissance Man, Energy of the Daleks, The Foe from the Future, Dead Men's Tales)
- Litefoot tells Payne that he and Jago have experience of other times. (TV: The Talons of Weng-Chiang; AUDIO: The Spirit Trap, Swan Song)
- The Time Eaters showed Payne how to travel back in time to 2011. (AUDIO: Swan Song)
- Jago and Litefoot recall learning that the New Regency Theatre will ultimately be destroyed at 8:47 p.m. on 12 October 1940 in "a future war." (AUDIO: Swan Song)
- Ellie refers to the fact that Litefoot allowed her to stay at his house when she was "ill". (AUDIO: The Theatre of Dreams, The Ruthven Inheritance)
- It would later be revealed that Leela was unable to return to Gallifrey using her Time Ring as the interference from Payne's temporal experiments had prevented it from functioning. Furthermore, the experiments dragged both the Sixth Doctor's TARDIS and a Temparon vessel to the 1890s. (AUDIO: The Hourglass Killers)