"A hands-on guide to introduce kids to the fascinating world of secret codes and ciphers, Code Cracking for Kids explores many aspects of cryptology, including famous people who used and invented codes and ciphers, such as Julius Caesar and Thomas Jefferson; codes used during wars, including the Enigma machine, whose cracking helped the Allies gather critical information on German intelligence in World War II; and work currently being done by the...

"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)"--

"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"--

"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"--

Quietly infiltrating a high-security building to steal secret documents. Sneaking behind enemy lines to rescue an important government official. Secretly listening to an enemy's conversation without getting caught. Fans of stealthy video games enjoy these activities and many more. But what is the true story behind today's popular stealth games? What methods to spies use to secretly gather intelligence? What kind of gear to secret agents use to spy...

"How did real-life spies communicate in secret? Readers get a sneak peek at real spies and the gear they used to complete their missions!"--

Uses photographs, original sources, maps, timelines, and facts to explore the lives of modern-day spies.

Gives readers a thrilling, behind-the-scenes look into how World War II spies gathered information for the Allied and Axis powers. Learn about the tools that daring spies used during this conflict, and how spies such as Josephine Baker and Juan Pujol risked their lives to defeat Nazi Germany. Additional features include a Fast Facts spread, critical thinking questions, a phonetic glossary, resources for further study, and an index.

Frank and Joe Hardy's efforts to retrieve a top-secret invention from a scientist's house in Bayport leads them to a mystery involving a dangerous gang of jewel thieves and smugglers.

A biography of Revolutionary War general and first President of the United States, George Washington, focusing on his use of spies to gather intelligence that helped the colonies win the war.