I have read hundreds of books about the holocaust over the years and yet this book still managed to hold my attention - I could not put it down! The author has thoroughly researched his topic and gives an informative, detailed account of Operation Reinhard, the extermination of Polish Jewry. The book impartially details the full history of the 3 death camps, stories from the prisoners who were incarcerated there and the personnel who worked within them. This book is an absolute 'must read' as it accurately describes the extent of the perfectly oiled killing machine that was devoted to destroying a whole race of human beings. Little is known about Operation Reinhard, the holocaust often being synonimous with Auschwitz. This book is a real testimony to all the people who lost their lives in these camps, which were purposely built for human destruction.