Secret Agent Jack Stalwart 

In this action-packed series, nine-year old secret agent Jack Stalwart travels the globe in search of his missing older brother Max while solving international crimes for the Global Protection Force. In The Mystery of the Mona Lisa, Jack is sent to the Louvre Museum in Paris to track down the theft of the world's most be-loved painting. He has to match wits with a seemingly invisible mastermind equipped with gadgets to match his in order to stop Leonardo's masterpiece from slipping into the criminal underground forever. Can Jack's Hypo-Disk overpower a glove that shoots fine laser beams from its fingertips? Jack's adventures in the City of Lights (GPF code name: Cheese) demon-strate once again that when it comes to outsmarting the baddies--Jack is the go-to agent with endless tricks up his sleeve. Canny and resourceful, Jack will delight readers and impress their parents.