In Germany 1933, Adolf Hitler spread anti-Semitic ideology and began to exclude Jews from society.

Shedding new light on the atrocities of the Final Solution; the German invasion of Poland saw death squads terrorize Jewish populations, who were rounded up and placed in ghettos.

By 1941, Hitler's focus was on the USSR. The Nazis' merciless advance led to the ghastly Babi Yar massacre in which 33,000 Jews were killed.

Leading historians reflect on the barbarity of the Holocaust. By 1941, the Nazis were using gas as the hideous method for mass killings at their death camps - including Auschwitz.

By 1942, the Nazis were liquidating their ghettos and transporting prisoners to the gas chambers. The documentary group Oyneg Shabbos chronicled the true terror of these round-ups.

Faced with the undaunted advance of the Allies, the Germans eliminate traces of the extermination. Survivors in the ghetto of Warsaw, and prisoners at Sobibor and Treblinka rebel. Almost 2.7 million deported people perish in the camps.