David Walliams 
Demon Dentist 

The jaw-achingly funny novel from David Walliams, the number one bestselling author! Make your appointment if you dare…Darkness had come to the town. Strange things were happening in the dead of night. Children would put a tooth under their pillow for the tooth fairy, but in the morning they would wake up to find… a dead slug; a live spider; hundreds of earwigs creeping and crawling beneath their pillow.Evil was at work. But who or what was behind it…?Read this book and find out!