Josef Mengele (Günzburg, Germany, 1911 – Bertioga, Brazil, 1979) was one of the most sadistic criminals of the Nazi regime, known above all for his experiments on children at Auschwitz. After Hitler's defeat, he managed to evade justice. He fled to Argentina, where he was welcomed with open arms. There, he first posed as Helmut Gregor, worked as a carpenter, and entered Nazi circles, where he met Hans-Ulrich Rudel, a Luftwaffe pilot. This friendship proved invaluable, as Rudel created the Kameradenwerk network, which sheltered many Nazis in Latin America. From Argentina, Mengele went to Paraguay and from there to Brazil. In Brazil, he received the most help from Liselotte Bossert, an Austrian-born primary school teacher. The Brazilian journalist Betina Anton, a former student of Bossert's, later sought her out and asked her questions about the Nazi criminal. It was the beginning of an investigation that led him to discover how the network that hid Mengele operated, even after his death. He discusses this in the book. Hunt Mengele. Like a net, it gave refuge to the angel of deathTranslated by Sebastià Bennasar and published in Catalan by Manifiesto and in Spanish by Plataforma.