"Dorn of the Darkness" is a picture book written by Hermann Führ. It is said to be Gustav's and Johan's favorite book. It is about a man name Dorn who makes a deal with a devil to gain power. He slowly becomes evil with every villain he kills. At first he resisted the evil, but the evil took over after he read a book written by a sinister author. The book ended abruptly after Fuhr faked his death.