Here"s a book that will turn any young reader into a super sleuth capable of breaking some of the world"s toughest codes. Children learn how codes work, along with special tricks for deciphering coded messages, and use these codes to send notes or to share information that is strictly classified between friends. With a fun-filled array of secret jokes, riddles, and poems, plus a variety of popular and new codes, this entertaining book will give readers pages of puzzling pleasure.