Bernie Gunther is back on the mean streets of Berlin with his new partner, Bruno Stahlecker, another ex-police officer. But on a seemingly straightforward stakeout, Bruno is killed, and Bernie suddenly finds himself tapped for a much bigger job. A serial sex murderer is killing Aryan teenage girls in Berlin—and what's worse, he's making utter fools of the police. Gunther is forced to accept a temporary post in Obergruppenfuehrer Reinhard Heydrich's state Security Service, with a team of men underneath him tasked purely with hunting the killer. But can he trust his team any more than he can trust his superiors?