After the war Alex returns to Vienna and discovers that the city and his former life have been destroyed. An old contact recruits him into a new American-backed intelligence service staffed largely by former German military officers and focused on the growing Soviet threat.
His first assignment is also personal: locate the Gestapo officer who helped ruin his life and is attempting to escape through the Alpine ratlines to South America. The pursuit forces Alex to work beside compromised allies and decide whether justice can be separated from revenge when the new Cold War makes useful Nazis valuable again.