In wartime Berlin the brilliant, idealistic young detective Georg Heuser joins the Murder Squad in the midst of the biggest manhunt the city has ever seen. A serial killer is slaughtering women on S-Bahn trains and leaving their battered bodies by the tracks. Heuser must confront evil eye-to-eye as he helps track down the murderer. Soon after, Heuser is promoted by the SS and sent off to oversee the systematic murder of thousands of Jews in the new empire the Nazis call Ostland. Years after the end of the war Heuser thinks his diabolical past has been forgotten. Yet, an enterprising young lawyer, Paula Siebert, searching through Soviet archives, discovers Heuser and his fellow officers' crimes.