Phillip Kerr has created on of crime fictions most interesting characters in Bernie Gunther.  A police officer in Nazi Berlin, he must walk a thin red line between integrity and complicity from the world war to the cold war. Prussian Blue (2017) is set in the 1950s; Gunther is working as a concierge in Cannes.  When he is approached by the East German secret police to do a hit, he does a runner. He is pursued by Friedrich Korsch, a former Gestapo agent that Gunther o collaborated with in 1939 to cover up a shocking murder at the Berghof, Hitler’s mountain retreat. “Kerr vividly captures the excruciating moral ambiguity of Bernie’s position”, showing sometimes “that cynicism is the only sane reaction for a man on the wrong side of history” (Booklist).