Agent Zigzag: A True Story of Nazi Espionage, Love, and Betrayal by Ben Macintyre; 2008. Softcover.

Eddie Chapman was a charming criminal, a con man, and a philanderer. He was also one of the most remarkable double agents Britain has ever produced. Inside the traitor was a man of loyalty; inside the villain was a hero. The problem for Chapman, his spymasters, and his lovers was to know where one persona ended and the other began. Based on recently declassified files, Agent Zigzag tells Chapman’s full story for the first time. It’s a gripping tale of loyalty, love, treachery, espionage, and the thin and shifting line between fidelity and betrayal.