Looks at the history's most daring women, including profiles of such figures as Underground Railroad heroine Harriet Tubman, CIA agent Valerie Plame Wilson, and Chinese Revolution-era spy Eva Wu.

"Anna Smith Strong was a fearless woman who acted as a spy for George Washington during the Revolutionary War. Recruited by Washington's spymaster, Major Benjamin Tallmadge, she joined the Culper Ring, a group of American spies. General Washington placed a huge amount of trust in his spies, and Anna helped pass him important messages at a great risk to herself and her family. One of her cleverer devices was to hang laundry on the line in a planned...

"When Hitler invaded Poland on September 1, 1939, Virginia Hall was traveling in Europe. Which was dangerous enough, but as fighting erupted across the continent, instead of returning home, she headed to France. In a country divided between freedom and fascism, Virginia was determined to do her part for the Allies. An ordinary woman from Baltimore, Maryland, she dove into the action, first joining a French ambulance unit and later becoming an undercover...