Following World War II, at the Nuremberg trials, members of the Nazi regime were convicted of crimes against humanity as a response to the widespread and systematic atrocities they committed against civilian populations during the war, especially the attempted extermination of European Jewry. Seventy years later, the world still lacks a global treaty for the prevention and punishment of crimes against humanity, despite the ongoing commission of these crimes. Combining the testimony of survivors and the commentary of internationally renowned experts — including the late Whitney H. Harris, a longtime St. Louis resident who served as a Nuremberg prosecutor — “Never Again" chronicles the slow but steady effort to remedy this gap in international law and practice. The film was produced by the Crimes Against Humanity Initiative at Washington University School of Law under the direction of Professor Leila Sadat, director of the Whitney R. Harris World Law Institute.