Book excerpt: Clandestine missions. Clever, devious, daring. Passionately committed to a cause. During America's most divisive war, both the Union and Confederacy took advantage of brave and courageous women willing to adventurously support their causes. These female spies of the Civil War participated in the world's second-oldest profession-spying-a profession perilous in the extreme. The tales of female spies are filled with suspense, bravery, treachery, and trickery. They took enormous risks and achieved remarkable results-often in ways men could not do. As stated on the grave marker of Union spy Elizabeth Van Lew: "She risked everything that is dear to man-friends, fortune, comfort, health, life itself." Told with personality and pizzazz, author H. Donald Winkler uses primary Civil War sources such as memoirs, journals, letters, and newspaper articles, plus the latest in scholarly research, to make these incredible stories come alive.