Little Dennis doesn't want to go to sleep because there might be something under his bed. Dennis isn't afraid of monsters--after all, he's a monster himself. He's afraid that humans will get him. His mother says that humans are only in made-up stories, but Dennis is not convinced--but just try telling that to the lost little boy who wanders into Dennis's cave one night! Rollicking rhyme and delightfully detailed illustrations make this story of a bedtime surprise the perfect book for little monsters.