Critic's chart: true-life spy stories

Ben Macintyre, columnist for the Times (London) and author of Agent Zigzag: Lover, Traitor, Hero, Spy, named his top six true-life spy stories for the Times.One book on the list:Garbo: The Spy Who Saved D-Day by Mark SeamanJuan Pujol, a Spanish anti-fascist codenamed “Garbo” by MI5, was a highly effective double agent.Read about the other titles on Macintyre's list.--Marshal Zeringue