The shortest Discworld novel - originally published as an illustrated novella. Eric is a fourteen-year-old demonologist who thinks he's summoned a demon. He's actually summoned Rincewind. Together they embark on a Faust-inspired tour of the Discworld's history, visiting the creation of the world, the Trojan War (Discworld-style), and Hell itself. Brief, breezy, and unexpectedly philosophical in places.