Albas Secret codes

This book teaches you how to send secret messages to your friends or to whomever you love, so that no one understands them. You just need to practice a little with the book's cryptographic codes: from Julius Caesar's code, to displacement codes and fun Boy Scout coding methods. You can find out if you answered correctly, thanks to your electronic pencil. This book will test your wit and insight! Test your investigative skills through fun logical, intelligent, observational games and become a real detective. You can find out if you answered correctly, thanks to your electronic pencil.