A dark song of blood

Rome, 1944. As the Allies steadily get closer, the German occupying forces know their days are numbered. The hero is an officer in the Wehrmacht, torn between his duty as an officer and his integrity as a human being. He must investigate the deaths of a young German Embassy secretary, a Roman socialite and a cardinal, forcing him to confront historical characters like Field Marshal Kesselring and Monsignor Montini (the future Pope Paul VI).