I have read many books about the inhumanity towards the Jewish people of Europe during the Holocaust but none as heart wrenching as this. This book was very well written, easy to follow and so engrossing I could not put it down. Dr. Miklos Nyiszli endured horrors no human being should ever be subjected to. Not only was he himself a prisoner in Auschwitz, he was forced to preform unimaginable medical procedures against his own people and witness to countless executions of thousands of people in the gas chambers. This account of the horrors of those forced to comply with the Nazi's to exterminate their own people is by far the most detailed I have read. Most of the men and woman who were interned with this task were, in a few short months, themselves executed to keep the secrets the Nazi's wanted never to be exposed, and therefore few survived to bear witness to it. I strongly recommend this book. It is one I will likely not forget.