Spy's Handbook

The complete guide to professional spying for 8-to-80-year-olds.Whether you're just a bit nosy, or you want to launch a full-scale investigation of your neighbours, this indispensable handbook will teach you everything you need to know. There are practical sections on codes, ciphers, invisible ink and signalling, as well as guidance on drops and safe houses.This book teaches you how to spot when s...