Beginning in 1950, the state of Israel prosecuted and jailed dozens of Holocaust survivors who had served as camp kapos or ghetto police under the Nazis. At last comes the first full account of the kapo trials, based on records newly declassified after forty years. In December 1945, a Polish-born commuter on a Tel Aviv bus recognized a fellow rider as the former head of a town council the Nazis had established to manage the Jews. When...