Few lives shed more light on the complex relationship between Jews and Christians during and after the Holocaust--or provide a more moving portrait of courage--than Oswald Rufeisen's. A Jew passing as a Christian in occupied Poland, Rufeisen worked as translator for the German police--the very people who rounded up and murdered the Jews--and repeatedly risked his life to save hundreds from the Nazis. In this gripping biography, Nechama Tec, a widely...