This brand-new title in the hugely successful Clever Kids (R) series contains over 100 code conundrums and cryptograms to exercise young minds. From hidden words and logic puzzles to code breakers and enigmas, it's packed with secret-agent and spy challenges to put kids' mental agility and lateral-thinking skills to the test. Created by bestselling puzzle book author Gareth Moore, author of the chart-topping Brain Games for Clever Kids.