"An expansive biography of Benjamin Ferencz, a Romanian-born Jewish American lawyer of humble beginnings who prosecuted the Einsatzgruppen-a group of Nazi SS detachments responsible for the murder of approximately 1.5 million civilians in Eastern Europe during World War II-at the American military tribunal in Nuremberg in 1947. This biography also details the remainder of Ferencz's career, during which he worked on reparations and toward the establishment of a permanent International Criminal Court"--