The team investigates why gold was so vital to the Nazis, the brutal methods they used to get it and where some of the missing gold may still be hidden today. In the United States, Holocaust survivor Irene Weiss tells Robert Edsel the heartbreaking story of the Canada Commando, a special unit of Jewish prisoners at Auschwitz who were forced to collect the gold wedding rings, gold teeth fillings and other valuables from Jews who were murdered at the camp