Carole A. Schram

In 1942, the Gestapo sent out an urgent transmission: "She is the most dangerous of all Allied spies. We must find and destroy her." The target in their sights was Virginia Hall, a Baltimore socialite who talked her way into Special Operations Executive, the spy organization dubbed Winston Churchill's "Ministry of Ungentlemanly Warfare." She became the first Allied woman deployed behind enemy lines and - despite her prosthetic leg - helped to light the flame of the French Resistance, revolutionizing secret warfare as we know it.

On January 17, 1913, alone and near starvation, Douglas Mawson, leader of the Australasian Antarctic Expedition, was hauling a sledge to get back to base camp - the dogs were gone. Mawson plunged through a snow bridge, dangling over an abyss by the sledge harness. A line of poetry gave him the will to haul himself back to the surface. On February 8, when he staggered back to base, his features unrecognizable, the first teammate to reach him blurted out, "Which one are you?"