Demon Dentist by David Walliams

Age 8-12

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…?