In this remarkable, evocative narrative, the life of Auschwitz's Angel of Death is told in counterpoint to the lives of the surviving twins, who are themselves now inching into middle or old age. In stories that abound with ambiguity, anger, and redemptive hope, we encounter them first as children beginning their descent into Auschwitz by witnessing their entire families being led away to be killed. Later, we see the twins grateful for the soup and...