Throughout history, spies have remained in the shadows, even as they have played a decisive role in wars. Readers 9 to 12 can uncover the lives of 20 spies who made it their mission to uncover the truth and collect secret information from their enemies. Depicted in Alexander Mostov's stylish two-page spreads, here are Elizabeth I's spymaster, Francis Walsingham; Alan Turing, who cracked the Enigma code; actress Hedy Lamarr, radio technology innovator; and unstoppable WWII Resistance fighter, Nancy Wake. Showing the darker side of espionage, here too are Kim Philby, Mata Hari, and J. Edgar Hoover.