Betraying Hitler: The Story of Fritz Kolbe, the Most Important Spy of the Second World WarPaperback, 1 March 2006

In 1942, a lone clerk in the German Foreign ministry offered to spy for free for the Allied forces. Over the following three years, Fritz Kolbe risked his life to smuggle more than 1,600 top secret Nazi documents, from reports of missile developments to plans to deport Jews to the death camps. Only recently declassified by the CIA, Kolbe's exploits are detailed here for the first time.