The huge success of Spy Kids and other similar movies makes it clear: children love watching young agents who are smart enough and tough enough to beat the bad guys—and they fantasize about doing it themselves. That's why they'll be thrilled to hear about Agent O, the world's most top-secret secret agent. No one knows Agent O's true identity—especially that O is still a kid! And budding sleuths can get in on the fun, because this fully illustrated handbook gives them the opportunity to help Agent O fight a criminal mastermind, crack the codes that reveal a perilous scheme for world domination, and make all sorts of cool gadgets and disguises.