"In April 1938, a man calling himself Josef Hofmann arrives at a boarding house in Hamm, Germany, and lets a room from the widow who owns it. Fifty years later, Walter Gersdorff, the widow's son, who was eleven years old in the spring of 1938, discovers the carefully hidden diary the boarder had kept during his stay, even though he should never have written any of its contents down. What Walter finds is a scathing chronicle of one the most tumultuous...