Hanns Alexander was the son of a prosperous German family who fled Berlin for London in the 1930s. Rudolf Hoss was a farmer and soldier who became the Kommandant of Auschwitz Concentration Camp and oversaw the deaths of over a million men, women and children. In the aftermath of the Second World War, the first British War Crimes Investigation Team is assembled to hunt down the senior Nazi officials responsible for the greatest atrocities the world has ever seen. Lieutenant Hanns Alexander is one of the lead investigators, Rudolf Hoss his most elusive target. In this book Thomas Harding reveals for the very first time the full, exhilarating account of Hoss' capture.