Day i was erased (Scholastic)

The brand new read-in-one-sitting mystery from the author of 'The Goldfish Boy' and 'The Light Jar.' Maxwell is always, always in trouble. Roaming the town with his beloved pet dog Monster (who he rescued as a puppy from being run over) as a way to escape his parents' constant sniping at home, he's a menace to the neighbours and teachers at school. While visiting an elderly neighbour, he comes across a mysterious cabinet of curiosities and suddenly finds himself erased from his life: it's as if he's never existed. Able to walk around anonymously might be great at first - no-one yelling at him! but he soon realises that he misses his old life and Monster.