The events described in the book are valuable from a historical point of view. The author is one of the few surviving prisoners who was a member of the Auschwitz—Birkenau Sonderkommando. Members of the Sonderkommando escorted the prisoners to the gas chambers, which were equipped as showers. They helped to undress, cut off women's long hair, took away things, and extracted gold teeth after death. But their main task was to transport the bodies of the victims from the gas chambers to the furnaces. Since the members of the Sonderkommando were unwitting accomplices of the executioners in order to hide crimes against humanity, almost all of them were killed. This book is a true story about a place where inhuman cruelty, despair, hunger, suffering and death were part of daily reality, and a reminder of the terrible tragedy that forever crossed out the fate of many men, women and children. The preface to the book was written by Simone Weil, a former prisoner of Auschwitz, president of the Holocaust Memorial Foundation.