A murder in wartime Switzerland reveals Swiss complicity with the Nazis in World War II, and US Army detective Billy Boyle is called to investigate. Europe, 1944: Captain Billy Boyle and his friend Lieutenant Piotr "Kaz" Kazimierz are sent to neutral Switzerland to work with the Office of Strategic Services (OSS), investigating Swiss banks that are laundering looted Nazi gold. The US and Swiss governments are about to embark on diplomatic discussions...