Piercing the Reich: American Spies in Nazi Germany

For over 30 years, this story could not be told. It was locked deep in the C.I.A. vaults under a "Top Secret" stamp. Then Joseph Persico, collaborator on the blockbuster Colin Powell autobiography, MY AMERICAN JOURNEY, used the Freedom of Information Act to pry loose one of World War II's most thrilling sagas. He uncovered every hidden detail of daring OSS heroes who penetrated the heart of history's most ferocious police state.

• documentary