Hitler's doctor was, in the end, human: he never expected that his detailed professional notes about his most infamous patient would ever be viewed by laypersons or would ever leave Germany. Both the Foreword by Upton Sinclair, and the Preface by one of Krueger's colleagues--Dr. K. Arvid Enlind, M.D., Lt. Col., Medical Reserve, USA--offer detailed, specific impressions of Dr. Krueger's medical and psychological diagnoses as well as the difficulties of translating from the German.