This landmark work answers two of the most fundamental questions in history - how, and why, did the Holocaust happen? Laurence Rees has spent twenty-five years meeting survivors and perpetrators of the Holocaust. Now, in his magnum opus, he combines their enthralling eyewitness testimony, a large amount of which has never been published before, with the latest academic research to create the first accessible and authoritative account of the Holocaust in more than three decades. This is a compelling new account of the worst crime in history.