"An epic examination of a Nazi war criminal * Guardian * The most gripping and illuminating account of Nazi genocide that I have read, shedding light, as she intended, on ""a whole dimension of reactions and behaviour we have never yet understood"" -- Stephen Vizinczey * Sunday Telegraph * She takes us sharply and deeply into the hierarchy of the death camps; the methods used; the experiences of the very few survivors, both inmates and guards -- Philip Toynbee * Observer * It is no exaggeration to call it a masterpiece -- Michael Hilton * Daily Telegraph *"