In 1923, Sigmund Freud, 67 years old and an inveterate cigar smoker, discovers that he has mouth cancer, a truth long hidden from him by doctors. Despite his diagnosis, Freud survived 15 more years, convinced the cigars that were slowly destroying him increased his productivity and gave him control over himself. At the same time, a different sort of cancer was consuming Europe. In 1933, Adolf Hitler rose to power in Germany, annexing Freud's home country of Austria five years later. His bo...