Folker Heinicke always had the feeling that something about his upbringing just wasn't right. Being raised in a German home full of wealth and privilege did not dull his notions that something was missing, but it would be decades before he would learn the full truth: he was the child of a Nazi program to strengthen the German race with Aryan blood. He and other children — known as "Lebensborn Kinder" or "source of life" kids — were the product of parents chosen for their traits to breed Hitler's idealized blue-eyed, blonde-haired Aryan race. For the last four years, Heinicke...