Explore the dangerous, daring world of real-life spies! From World War I to the Cold War and beyond, experience the most notorious, ingenious spies of the 20th century through present day. With vivid, full-color photographs, detailed maps, and thoroughly researched time lines, get to know the unknowables, including cyber spies, secret agents, deep-cover spies, and no-good double-crossers. From prolific history writer Allison Lassieur and Rebecca Langston-George, Spies! is the espionage book you've been hunting for!