The secret life of spies

"Meet double agent Nathalie Sergueiew, who helped collect information for the Allies during World War II; high-altitude pilot Gary Powers, who flew to great heights to take photographs of Soviet military installations; and mathematical genius Alan Turing, whose incredible work helped crack Nazi encryptions. These incredible people, along with a host of other amazing individuals, have all helped shaped the history of espionage through their dedicated work"--Back cover.