This spy-themed puzzle book 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, logic, and lateral-thinking skills to the test.Written by Gareth Moore, PhD, the bestselling author of the popular Clever Kids(R) series, this puzzle-packed adventure is designed to entertain and educate. Illustrated by Chris Dickason in a funny and entertaining style.