Two Against Hitler: Stealing the Nazis’ Best-Kept Secrets (1992)

In the years leading up to World War II, a little-known, but well-connected German economist provided valuable intelligence on Nazi war strategies to a confidant in the American embassy named Sam Woods. Erwin Respondek collected information on Hitler’s attempts to build an atomic bomb and his secret plan to invade the Soviet Union.

“A stirring account of World War II espionage and exploration of the uses of intelligence in high policy […] told with an uncommon combination of restrained emotion and academic detachment.” — History