1942: Duquesne Spy Ring convicted

On January 2, 1942, the group was sentenced to serve a total of over 300 years in prison.

The Duquesne Spy Ring is the largest espionage case in United States history that ended in convictions
The Duquesne Spy Ring is the largest espionage case in United States history that ended in convictions

TODAY in 1942, the  Federal Bureau of Investigation  convicted 33 members of a German spy ring headed by Fritz Joubert Duquesne in the largest espionage case in United States history—the Duquesne Spy Ring.

Of those indicted, 19 pleaded guilty.

The remaining 14 were brought to jury trial in Federal District Court, Brooklyn, New York, on September 3, 1941; all were found guilty on December 13, 1941.

On January 2, 1942, the group was sentenced to serve a total of over 300 years in prison.

War Life