Sneak into the secret lives of spies with this fascinating series about the world's security services - with agent profiles, information on technology and events that changed the world.
Adrian Gilbert is a British author and historian who writes primarily on the subject of military history – particularly relating to wars of the 20th century.
For young readers who are interested in learning about codes and secret spy techniques, then this is a great book for them! Filled with great photographs and illustrations, the book goes through the history of codes/ciphers and how they've advanced through the years. A great bonus is that each type of code is explained in detail and there are exercises for the reader to experiment with. A great book for anyone's collection.