Growing up in Charlottesville, Virginia, in the early 1900s, young Carrie Buck impressed those she met as serious and self-possessed, someone whose quiet demeanor hinted at a life filled with challenges. Of humble origins—her widowed mother had given her up to foster care as a child—the stocky, darkhaired girl didn’t let her difficulties get her down. She enjoyed reading the newspaper, liked to fiddle with crossword puzzles, and always made herself useful around the house. She was a bit awkward in social situations, but otherwise she was a thoroughly average teenager. No one had any reason to think differently of her. Then something terrible occurred that changed Carrie’s life forever.
In 1923, when she was seventeen, Carrie Buck was raped by a nephew of her foster parents. The girl became pregnant, and her foster parents—perhaps embarrassed by what their nephew had done—decided to hide the girl away by committing her to the Virginia Colony for the Epileptic and Feebleminded, a mental facility in the town of Lynchburg. Carrie’s birth mother had previously been committed to the same institution, accused of...