Since the 1930s scholars, scientists, journalists and ordinary folk have wondered why the Nazis could have committed so many ghastly crimes against innocent people and children. At times a few helpful insights arise from the killers themselves…[content continues as provided, but with consistent formatting and paragraph breaks]…In an anti-climax El-Hai relates Kelley’s stormy and intellectually restless postwar life, which ended sadly when he took a leaf from Goering and swallowed a cyanide pill.