Foreword -- Why spy?: Why do nations spy? -- Early spies -- Spies at war -- Spies at war (part two) -- Sabotage and assassination -- Industrial espionage -- Spying on the public -- Summary -- Spies and secret services: Secret services -- Part of a team -- Recruiting spies -- Spy rings -- Spy catching -- Summary -- Techniques and equipment: Breaking in-getting out -- Surveillance -- Eye spy -- Listening in -- Getting a message back -- Codes and ciphers -- Disguise and cover -- Art of concealment -- Secret weapons -- Swapping spies and information -- Silicon spies -- Summary -- Glossary -- Abbreviations of organizations -- Index -- Acknowledgments.