Head of the Abwehr (German military intelligence) during World War II, Admiral Wilhelm Canaris (1887-1945) has been both damned as Hitler's master spy and praised as the true hero of the German anti-Nazi resistance. What emerges in Heinz Hohne's definitive biography is a panoramic view of the rise and fall of Nazism as reflected in the destiny of one man who hoped, for patriotic purposes, to harness evil temporarily, only to be destroyed by it.