Theory:Timeline - K9 Mark III

This page lists appearances of K9 Mark III in the order in which he experienced them. This timeline is based on observations of the Doctor Who universe and the events in each of these stories. From these observations we have attempted to build a concise timeline. It is assumed, much like their TV story counterparts, that each novel or audio series their published/numbered order is the order they occur in.

The layout of this timeline is based in part on the observations on Doctor Who Reference Guide and Doctor Who - The Complete Adventures, Lance Parkin's AHistory and other sources that allow us to make observations, such as DocOhoReviews, The History of the Doctor, The Discontinuity Guide, Clive Banks Databank, the Big Finish forums and The Divergent Universe forums. None of these sources should be used solely as a source or considered a "true" timeline for stories.

Travels with the Doctor

 * K9 Mark III has been assembled by the Fourth Doctor after K9 Mark II remained in E-Space with Romana II, and travels for a time with him and Adric.


 * PROSE: Inter-Galactic Cat


 * PROSE: Conundrum


 * PROSE: Planet of Paradise


 * COMIC: Plague World


 * PROSE: Just a Small Problem

With Sarah Jane

 * The Doctor drops K9 Mark III of for Sarah Jane, (A Girl's Best Friend, A Boy's Tale)


 * TV: A Girl's Best Friend / PROSE: K9 and Company (novelisation)
 * K9 is found by Sarah Jane in 1981, three years after the Doctor left him to her in her previous house.


 * PROSE: Powerstone
 * PROSE: The Shroud of Azaroth
 * PROSE: Hound of Hell
 * PROSE: The Monster of Loch Crag
 * PROSE: Horror Hotel
 * PROSE: The Curse of Kanbo-Ala
 * TV: The Five Doctors
 * PROSE: Harry Sullivan's War
 * Set in May 1983.


 * COMIC: Train-Flight
 * Set in 1990.


 * PROSE: Housewarming
 * Sarah remembers meeting the Master in The Five Doctors.


 * HOMEVID: Downtime / PROSE: Downtime
 * Set in 1995.


 * PROSE: Interference - Book One / Interference - Book Two
 * Set in 1996.


 * PROSE: Bullet Time
 * Set in 1997. Sarah's death here is undone during the events of PROSE: Sometime Never....


 * PROSE: Moving On
 * K9 is beginning to break down.


 * TV: School Reunion
 * Set in 2007. K9 is repaired by the Tenth Doctor, and sacrifices himself to defeat the Krillitanes.