Scooby-doo movie novelization

Scooby, Shaggy, Daphne, Fred, and Velma are visiting Spooky Island, an amusement park filled with rides, attractions, thrills, and chills galore. It?s a cool place where nothing is as it seems, and no one leaves quite the same way as they were when they came in. Who?s behind the mask of deception this time? The gang from Mystery, Inc. is ?ruff? n? ready to find out!.