This surprisingly moving narrative set in Victorian England braids together three histories. First, the making of the great Oxford English Dictionary (OED), which took seventy years to complete. Second, the life of the professor, Dr. James Murray, the OED’s third and justly most famous editor, who worked on it for the last forty years of his life. And third, the life of the madman, Dr. William Chester Minor, major contributor to the OED, an American, Yale educated physician, whose illustrious career as a Union officer and surgeon during the Civil War ended due to mental illness that rendered him “unfit for duty” and led to tragedy.