Auschwitz, 1943. Joseph Mengele - the Nazi doctor known as "Angel of Death " - conducts a series of horrific human experiments. Experiments designed to determine if twins hold the key to building a blond-haired, blue-eyed master race for Adolf Hitler. Now a writer says he has evidence that the fertility experiments may not have ended, but secretly continued, 20 years later, deep in the Brazilian outback. There, in a tiny farming town, among the 80 households are some 44 pairs of twins. Blond, blue-eyed twins. With exclusive access to the secret agents that trailed him, to the scientists now uncovering the facts behind the fantastical phenomenon we go inside the largest investigation ever launched to find the definitive answer. Did Mengele unlock the Secret of the Twins?
