You may be looking for the documentary. Varney holds the book up as supposed proof of the demonic origins of Izzy Sinclair. (COMIC: Tooth and Claw) The Devil Rides Out was a book which Izzy Sinclair read during her visit to Varney's island. (COMIC: Tooth and Claw) Behind the scenes Edit The title of the Iris Wildthyme audio play Iris Rides Out is a reference to this novel. Retrieved from "https://tardis.fandom.com/wiki/The_Devil_Rides_Out?oldid=2234273" Categories: Books from the real world + cat Cancel Save Community content is available under CC-BY-SA unless otherwise noted.