Carnathon

was once taken to a planet called Carnathon to be executed. (TV: Extremis, PROSE: Missy)
A stipulation of the Fatality Index was that the execution of a Time Lord should be carried out by another Time Lord. As they were "not easy to come by", the Twelfth Doctor was chosen. (TV: Extremis)
== Behind the scenes ==
* While the planet is left unnamed in TV: Extremis, PROSE: Missy gives the planet's name as Carnathon.
Category:Planets
Category:Planets visited by the Twelfth Doctor
Category:Planets visited by Missy