It would be a comfort to have an eminent psychiatrist propose a definitive diagnosis to explain Hitler's behavior, for it would permit us to avoid confronting humanity's capacity for evil. But in Hitler: Diagnosis of a Destructive Prophet, Fritz Redlich does not provide such comfort. Long troubled by the ease with which diagnoses were proffered for the architect of the Holocaust, Redlich, who was forced to flee Austria in 1938, set himself the monumental task of establishing a definitive diagnosis for Adolf Hitler. After reviewing many thousands of pages of documents, including the records of Hitler's attending physicians, and interviewing eyewitnesses to Hitler's behavior, Redlich, with scrupulous attention to detail, worked his way through a thorough psychiatric diagnosis at a distance. The results of this effort are both impressive and persuasive.