Existing comment:
William Sebold:
The FBI used double agent William Sebold to feed misinformation to Frederick Duquesne and to crack Duquesne's spy ring. After two years, Sebold had provided enough information for the FBI to round up all the members of the ring.
Illegal Immigrant and Double Agent:
German-born William Sebold had a secret. He had entered the US illegally but had somehow managed to become a US citizen. In 1939, while visiting family in Germany, German intelligence threatened to expose his secret unless he agreed to become their spy. Facing loss of his US citizenship, Sebold agreed. But instead, he reported the plan to the US and became a double agent. By infiltrating the Duquesne spy ring, he led to their demise, delivering the deathblow to German spy operations here. |