A thoroughly researched reference volume about spies, their agencies, operations, & much more; with more than 2,000 entries & over 60 illustrations on the people, agencies, tools, & methods of spies & their secret world. This is the most comprehensive single volume published on the clandestine world of espionage, intelligence, & cryptography, including previously unavailable archives from the KGB & even famous spies from literature. There are also 27 "master entries" that cover major spy rings, articles about major countries outlining national intelligence services & activities, & all categories of spy tradecraft. Chronology.