In 1885, a London newspaper editor, a religious leader, and a redeemed brothel owner took part in a covert action designed to draw attention to the ease at which children could be purchased for immoral purposes. Tucked away in the sensational account of that transaction, publicized as "The Maiden Tribute of Modern Babylon," was the small role of midwife Louise Rose Mourez. Her willingness to verify the virginity of Eliza Armstrong, the thirteen-year...