The fifth episode casts a light on the infamous Totenkopfverbände or “Death Head Units” of the SS. They were guards at the concentration camps, torturing and murdering prisoners on a daily basis. Disturbing personal photos from the camps show these men in their free time on excursions and at cheerful social gatherings. Who were the perpetrators who sent millions of prisoners in the extermination camps of Dachau, Sachsenhausen, Ravensbrück, Auschwitz and Sobibor to their deaths?