This is a book for anyone who wants to be a Good Spy. It shows every skill a Good Spy needs, including how to write code messages, how to put on disguises, and how to stalk and shadow Enemy Spies secretly. Good Spies must always be on guard for Enemy Spies. They need hiding places for their messages, and tricks to 'cover' or disguise their meetings. They must know how to change their looks with special clothes and make-up, and how to act a part successfully while in disguise. And all the time, they must be looking out for the chance to fool Enemy Spies and learn their secrets. Keep this book handy at all times, so that you can check your codes and signals whenever necessary - and keep your secrets out of the hands of the Enemy.