David Spaulding, a renowned violinist, is secretly recruited by Army Intelligence to utilize his global performances as a cover for espionage during World War II. Following his father's tragic death at the hands of the Germans, Spaulding agrees to the assignment and becomes a skilled operative. He is dispatched to Argentina to facilitate a deal between a German businessman and a diamond merchant, exchanging blueprints for German gyroscopes for diamonds.
The Rhinemann Exchange
An intelligence officer is sent by the U.S. government to Argentina to secure a crucial trade of industrial diamonds, essential to the German war effort, in exchange for a top-secret gyroscope vital to the Allied forces.











































