100 year old Benjamin Ferencz is a lawyer, writer, thinker and pacifist who investigated Nazi war crimes after the Second World War, and is the last surviving prosecutor from the Nuremberg War Crimes Trials. He was chief prosecutor for the US Army at the Einsatzgruppen Trial, one of the 12 military trials held by the U.S. authorities at Nuremberg in Germany from November 1945 to October 1946. He later became an advocate for the establishment of an International Criminal Court to make war criminals accountable for their actions. In his book Parting Words: 9 Lessons for a Remarkable Life he shares his extraordinary life story and some of the things he has learned along the way. He was also the subject of the 2018 documentary "Prosecuting Evil".