The Double Agent is a gripping and meticulously researched account of the largest and most successful counterespionage operation in US history.

This book reveals the never-before-told tale of William G.

Sebold, a German-American who infiltrated New York's Nazi underground in the days leading up to World War II.

With a cast of colorful characters, including a South African adventurer and a Jewish femme fatale, this book takes readers on a thrilling journey through the most important espionage bust in American history.

Don't miss out on this riveting story that will keep you on the edge of your seat until the very end.