Secret School Detectives: The Missing Map

A hidden map. A secret bookshelf. A mystery buried inside Oakwood School.Max, Lily, Sam, and Mia never expected an ordinary afternoon in the school library to turn into an adventure. But when a strange noise leads them to a hidden envelope behind an old bookshelf, they discover a torn map and a mysterious warning:"e;Find the bell before Friday."e;Now the four friends must follow clues through dust...