The gang from Mystery, Inc. is visiting Chicago to sing on the hit TV show "Talent Star." But they soon discover a spooky phantom is haunting the opera house where they're scheduled to perform! It looks like there's a mystery to solve! Can the gang crack the case of the Legend of the Phantom? Scooby-Doo is probably the world's best-known and most loved cartoon pooch. Scholastic's books are the #2 Scooby licensed product in the world!