"Like any amateur cryptologist and adventurer extraordinaire, Harley James has just one wish for her 12th birthday: to join her peers in an exploration of the city of Paris. With her father’s approval, she makes her way to France, ready to discover the secrets of the City of Light. But just as she arrives, Harley learns that an item has been stolen from the Louvre Art Museum, the legendary amethyst Rose de Paris. Soon after, she receives a message from S.M.A.L.L. with her next mission: find the stolen artifact before it falls into the wrong hands. "--from back cover