In this action-packed series, nine-year old secret agent Jack Stalwarttravels the globe in search of his missing older brother Max while solvinginternational crimes for the Global Protection Force. In The Mystery of theMona Lisa, Jack is sent to the Louvre Museum in Paris to track down thetheft of the world's most be-loved painting. He has to match wits with aseemingly invisible mastermind equipped with gadgets to match his in orderto stop Leonardo's masterpiece from slipping into the criminal undergroundforever.Can Jack's Hypo-Disk overpower a glove that shoots fine laserbeams from its fingertips?Jack's adventures in the City of Lights (GPFcode name: Cheese) demon-strate once again that when it comes tooutsmarting the baddies--Jack is the go-to agent with endless tricks up hissleeve. Canny and resourceful, Jack will delight readers and impress theirparents.

Elizabeth Singer Hunt is best known as the award-winning author of the Secret Agent Jack Stalwart chapter book series for younger readers. The fourteen-book series has been named a 'must read' for boys by the British Education Secretary, serialized by BBC Radio, and featured on Virgin Atlantic Airways' international flights.

Elizabeth lives in California with her husband and two children, and is an advocate for the Eco-Soap Bank, a public health nonprofit working to save lives in rural Cambodia.