Terry Pratchett joins up with a leading folklorist to reveal the legends, myths and customs of Discworld, with helpful hints from Planet Earth. Legends, myths, fairytales: our world is made up of the stories we told ourselves about where we came from and how we got there. It is the same on Discworld, except that beings which on Earth are creatures of the imagination - like vampires, trolls, witches and, possibly, gods - are real, alive and in some cases kicking on the Disc.