The mystery of the Mona Lisa / Hunt, Elizabeth Singer

Secret agent Jack Stalwart travels to France to investigate the disappearance of the Mona Lisa from the Louvre.

Secret agent Jack Stalwart travels to France to investigate the disappearance of the Mona Lisa from the Louvre.

When the Mona Lisa is stolen, Jack Stalwart, a secret agent with the Global Protection Force, must find it before it leaves the country and is never seen again.