At age 27 in his first case, Ben Ferencz, a Harvard-educated lawyer, prosecuted 22 men at Nuremberg—the biggest murder trial in history. Since then, Ferencz has been on a lifelong crusade to fight for justice, advocating for the establishment of an international rule of law and the International Criminal Court. In this gripping documentary, award-winning filmmaker Barry Avrich tells the story of one of the Holocaust’s most heroic figures—and one of the world’s most committed human rights lawyers—who believes, firmly, in “law, not war.”