espionage

"The clandestine world of spies and spying is built upon countries attempting to be problem solvers...This is a STEM journey that takes readers on a mission to learn about real spy gadgets through conversational text, engaging photos, and fun facts"--Provided by the publisher.

Includes a wide range of opinions surrounding issues concerning cyberwarfare.

An introduction to the history of spies and espionage.

Readers learn about the risks inherent in this line of work as they explore the fascinating history of undercover operations.

This intriguing and revelatory history of cryptology ranges from the early days of code-making and code-breaking to the present day.

Mathilde escapes war-torn Sofarende and reunites with Megs and the other children who are working for the army to retake Sofarende from the enemy, but Mathilde must come to terms with her past treasonous actions and determine what she must do in order to prove her friendship to Megs.

Mathilde escapes war-torn Sofarende and reunites with Megs and the other children who are working for the army to retake Sofarende from the enemy, but Mathilde must come to terms with her past treasonous actions and determine what she must do in order to prove her friendship to Megs.

Many of the heroes of World War II are well-known, larger-than-life figures. This book is a tribute to the lesser-known but equally amazing individuals -- some working secretly behind the scenes on the home front and others behind enemy lines -- who made just as significant a contribution to the wartime story. It sheds new and timely light on more than 50 of the often unsung heroes and heroines of the world's most destructive war.

Explores the lives of six famous spies from around the world.