In 1917, the notorious Oriental dancer Mata Hari was arrested on the charge of espionage; less than one year later, she was tried and executed, charged with the deaths of at least 50,000 gallant French soldiers. The mistress of many senior Allied officers and government officials, even the French minister of war, she had a sharp intellect and a golden tongue fluent in several languages; she also traveled widely throughout war-torn Europe, with seeming disregard for the political and strategic alliances and borders. But was she actually a spy? In this persuasive new biography, Pat Shipman explores the life and times of the mythic and deeply misunderstood dark-eyed siren to find the truth.