"Discusses different gadgets used by spies, such as invisible ink, hidden cameras, small guns made to look like ordinary objects, and bugs, and includes career information"--
"Examines spy agencies in the United States and around the world, including the founding of these agencies, such as the CIA, MI5, KGB, and BND"--Provided by publisher.
"Discusses different methods of secret communications used by spies, such as Morse code, the Enigma machine, the Najavo language, and digital steganography, and includes career information"--
"Discusses double agents and traitors throughout history, such as Benedict Arnold, Dusan Popov, Kim Philby, and Robert Hanssen, and includes information on becoming a spy catcher (counterintelligence agent)"--