Ninety-one-year-old Gretel Fernsby has lived in the same well-to-do mansion block in London for decades. She lives a quiet, comfortable life, despite her deeply disturbing, dark past. She doesn't talk about her escape from Nazi Germany at age 12. She doesn't talk about the grim post-war years in France with her mother. Most of all, she doesn't talk about her father, who was the commandant of one of the Reich's most notorious extermination camps. Then,...