BERNARD GUNTHER is a former soldier (he fought with the Wehrmacht on the Turkish Front in the first World War) and an ex-cop (an inspector for the Kriminalpolizei) now working as a private eye in the pre-World War II years of Berlin, specializing in the missing persons. Due to the rise of National Socialism, business is coming along nicely, thank you, even if Bernie doesn't seem to be making many friends with the powers that be. These books offer a harsh look at and a hard criticism of Nazism.
Somehow Bernie manages to survive the war, and emerges in the third novel, A German Requiem, re-established as a P.I. in the smug, hypocritical world of 1947 Vienna, with its corruption, its black markets and its prostitution.