- You may be looking for the documentary.
The Devil Rides Out was a book which Izzy Sinclair read during her visit to Varney's island. (COMIC: Tooth and Claw)
Varney holds the book up as supposed proof of the demonic origins of Izzy Sinclair. (COMIC: Tooth and Claw)
Behind the scenes
The title of the Iris Wildthyme audio play Iris Rides Out is a reference to this novel.