The World’s Worst Monsters, from Children's author David Walliams. You’ve met the world’s worst children, the world’s worst parents, the world’s worst teachers and the world’s worst pets – but are you ready for the world’s worst monsters?If you don’t like ghosts, ogres, zombies, vampires, aliens, werewolves or mummies, DO NOT READ THIS BOOK. | The World’s Worst Monsters by David Walliams, Hardcover | Indigo Chapters