What monster?

The fifteenth title in the bestselling Tom Gates series of books from the brilliantly talented Liz Pichon. What's that? A MONSTER? How has this scary beast escaped into Tom's sort-of-normal world? Is it one of his doodles? Is it Delia on the rampage? Or is it Mr Fullerman at full moon? All will be revealed in this book. According to Tom, it contains: MONSTERS - MYSTERY - A MUSIC FESTIVAL - MISSING STUFF. Oh, and also a very strict supply teacher who is every kid's nightmare. Is _that_ the monster? But you're not scared of monsters, are you? So don't let it put you off!