So called KZ camp doctors, especially the notorious Josef Mengele, would torture Jewish children, Gypsy children and many others. "Patients" were put into pressure chambers, tested with drugs, castrated, frozen to death, and exposed to various other traumas.

At Auschwitz Mengele did a number of twin studies, and these twins were usually murdered after the experiment was over and their bodies dissected. He supervised an operation by which two Gypsy children were sewn together to create Siamses twins.

Mengele injected chemicals into the eyes of children in an attempt to change their eye color. Unfortunately a strict veil of secrecy over the experiments enabled Mengele to do his work more effectively.The full extent of his gruesome work will never be known because the records he sent to Dr. Von Verschuer at the Kaiser Wilhelm Institute were shipped out in two truckloads and destroyed by the latter.

Twins undergoing his experiments didn't know what the objectives were. It is known that he had a special pathology lab where he performed autopsies on twins who had died from experiments. It was located next to the cremetorium.

Josef Mengele hid in South America after the war and he divorced Irene Mengele. In 1958, Mengele married his brother Karl's widow, Martha, and later she and her son moved to Argentina to join Mengele. Mengele's life had now established itself into the comfortable and secure routine of a family man in a 9-to-5 job with good prospects.

Despite international efforts to track him down, he was never apprehended and lived for 35 years hiding under various aliases. He lived in Paraguay and Brazil until his death in 1979. One afternoon, living in Brazil, he went for a swim. While in the ocean he suffered a massive stroke and began to drown. By the time he was dragged to shore, he was dead.