This biography of Britain’s spy chief during the Revolutionary War sheds new light on his conspiracy with Benedict Arnold—and his mysterious capture. John André was head of the British Army’s Secret Service in North America as the Revolutionary War entered its most decisive phase. In 1780, he masterminded the defection of the high-ranking American general Benedict Arnold. As the commander of West Point, Arnold agreed to turn the strategically vital fort over to the British. André and Arnold also conspired to kidnap George Washington. The secret negotiations between Arnold and André were protracted and fraught with danger. Arnold’s wife Peggy acted as go-between until September 21st, 1780, when the two men met face to face in no-man’s-land. But then André was captured forty-eight hours later, having broken every condition set by his commanding officer: he was within American lines, wearing civilian clothes, and carrying maps of West Point in his boots. When he announced himself as a spy, the Americans had no recourse. Tried by a military tribunal, he was convicted and hanged. André’s motives for his apparent sacrifice have baffled historians for generations. This biography provides a provocative answer to this mystery—explaining not only why he acted as he did, but how he wished others to see his actions.