Three wise-cracking mysteries in one where YOU are the supersleuth! A ghostly handprint inside a museum case containing pirate treasure, a new classmate with a mysterious secret, and a strange case of arson in a bookshop . . . In this third book, Saxby Smart - schoolboy detective - solves three more fascinating cases. In each story Saxby gives the reader clues which help solve the mystery. Are you 'smart' enough to work out the answers?