The Nazi Spy Ring in America. Rhodri Jeffreys-Jones

In the mid-1930s, just as the United States was embarking on a policy of neutrality, Nazi Germany launched a program of espionage against the unwary nation. Rhodri Jeffreys-Jones’s fascinating history provides the first full account of Nazi spies in 1930s America and how they were exposed in a high-profile FBI case that became a national sensation.