This groundbreaking book explores the treatment of the millions of refugees and tens of thousands of spies that flooded Germany after World War II. Drawing on newly declassified espionage files, Keith R. Allen reveals long-hidden interrogation systems that were developed by Germany s western occupiers to protect internal security and gather intelligence about the Soviet Union. He shows how vetting in the name of public order brought foreign intelligence officials into practically every venue in postwar West Germany, from train stations to corporate boardrooms to private dwellings. At the...