Spoilers are precisely defined here. Rules vary by the story's medium. Info from television stories can't be added here until after the top or bottom of the hour, British time, closest to the end credits roll on BBC One. Therefore, fans in the Americas who are sensitive to spoilers should avoid Tardis on Sundays until they've seen the episode.



prose stub
You may be looking for the titular concept.

Genocide was the fourth novel in the BBC Eighth Doctor Adventures series. It was written by Paul Leonard, released 1 September 1997 and featured the Eighth Doctor and Sam Jones.

This novel also features Jo Grant, who last appeared in novel form in the Missing Adventures novel Speed of Flight. This was the first full length story to feature an older Jo Grant. Katy Manning would reprise the role, showing a much different outcome of Jo Grant's life in the 2010 The Sarah Jane Adventures TV story Death of the Doctor.

Publisher's summary[]

Years after leaving UNIT, Jo Grant receives a plea for help from an old acquaintance. A palaeontological study of the earliest known humans is apparently under threat from a UNIT force led by a captain who does not officially exist. Investigating further, she begins to find herself out of her depth — and out of the twentieth century altogether...

Meanwhile, the Eighth Doctor and Sam visit Earth in 2109 — but there is no trace of the human race. Earth is home of the Tractites, a peaceful race who have been living there for hundreds of thousands of years. Astonished and appalled, the Doctor travels back in time to see just what went wrong in Earth's prehistory.

Why have Jo and the expedition been taken back in time? Are the Tractites all they seem? Finally, separated from the TARDIS, the Doctor's last chance to put things right rests with Sam — but has even she turned against him?


to be added




Fashion and clothing[]




Theories and concepts[]

  • The Time Vortex and the universe were thrown into chaos by the temporal paradox caused by Sam, the Doctor and the time trees' interference.

Time travel[]

  • The Time Trees allowed for barely controlled time travel.

United Nations Intelligence Taskforce[]


  • This novel was advertised on several Doctor Who VHS releases as one of several new novels. It was advertised with a background showing Jo Grant.
  • The depiction of Jo in this book is difficult to reconcile with her later appearance in the SJA television story Death of the Doctor. We can perhaps imagine that this book takes place in a "rough patch" of Jo's marriage, but she is well and truly on her own here. The word "divorce" doesn't appear in the book, but it's clear she has total financial responsibility for her child and herself. Moreover, she's only got one child in this story, Matthew, who just started high school. Death to the Doctor says she's got seven kids. It's hard to see how she could have six more kids after Matthew, with Cliff, starting at roughly the age of thirty-five. Additionally the separation/divorce from Cliff has left her having to hold down two jobs in Hackney. How exactly she was supposed to be globetrotting given this bleak reality is unclear. However, the short story Once upon a Time Machine, a loose sequel to Genocide, does suggest a brighter future for Jo.


External links[]