Director Claude Lanzmann spent 11 years on this sprawling documentary about the Holocaust, conducting his own interviews and refusing to use a single frame of archival footage. Dividing Holocaust witnesses into three categories, survivors, bystanders, and perpetrators, Lanzmann presents testimonies from survivors of the Chelmno concentration camp, an Auschwitz escapee, and witnesses of the Warsaw Ghetto Uprising, as well as a chilling report of gas chambers from an SS officer at Treblinka.