Crack the case with over 100 mind-bending puzzles in this thrilling addition to the Clever Kids® collection. Young detectives will navigate hidden messages, unravel cryptic codes, and solve spy-themed challenges that sharpen logic, boost problem-solving abilities, and spark creative thinking. Perfect for kids who love a good mystery and want to flex their mental muscles with everything from word games to brain-teasing enigmas. Every page delivers a new secret to unlock!