In August 1966 a group of Red Guards ransacked the home of Nien Cheng. Her background made her an obvious target for the fanatics of the Cultural Revolution: educated in London, the widow of an official of Chiang Kaishek's regime, and an employee of Shell Oil, Nien Cheng enjoyed comforts that few of her compatriots could afford. When she refused to confess that any of this made her an enemy of the state, she was placed in solitary confinement, where...