Virginia Hall left her Baltimore home in 1931 to enter the Foreign Service and went to work for the British Special Operations Executive (SOE) when Hitler was building toward the peak of his power in Europe. She was assigned to France, where she helped the Resistance movement, escaped prisoners of war, and American Allied paratroopers. By 1942 she was considered so dangerous to the Gestapo that she had to escape over the Pyrenees mountains--on...