The story of how a woman became Vietnam's best-selling author 35 years after her death is almost as compelling as what she wrote. In 1970, as the Vietnam War raged, U.S. intelligence officer Fred Whitehurst was burning a stack of captured enemy documents in Quang Ngai province when his translator begged him to spare a tiny cardboard-wrapped bundle because "it has fire in it already." Intrigued, the American asked his translator to read from the papers, which turned out to be the war diaries of Dr. Dang Thuy Tram, a North Vietnamese field surgeon shot by an American patrol...