There's more to Mia's school than meets the eye: rumours say a "lost" version of the Mona Lisa is hidden somewhere inside the building! Scheming criminals are hiding among the teachers, and even her parents are acting weird: with new courses in acrobatics and dressing in tight, black jumpsuits. But are they thieves? Bah, that's ridiculous!A funny art heist mystery that will steal your heart!The country is gripped with Mona Lisa Fever! The Royal Family has announced a huge reward for the return of a missing version of the Mona Lisa, stolen from their palace over 200 years ago.But in the town of Colpepper, Mia has a different art problem: she loves art, but her underfunded school is closing down the art department! But there's more to her school than meets the eye. Little-known local legend has it that the historic building contains a hidden vault, perhaps containing the Lost Mona Lisa! So Mia has no idea that scheming criminals are hiding among the school staff.Meanwhile, Mia's former-b