The Usborne Spy's Guidebook

This is a combination of guidebook filled with a range of activities and a CD-ROM for would-be spies to use to create uncrackable codes to send to their fellow agents. Find out how to write coded messages, create brilliant disguises and trail a suspect. The CD-ROM contains programs that instantly code and decode messages, plus a panic button facility which changes the computer screen from the secret code input screen to a picture of a spy moving across the screen. It includes a section with ideas on what to take on missions and puzzles and games to test and improve spying skills.