It began well - an experiment in techniques to teach high-risk children - poor, minority, children - the life-strategies that will allow them to succeed in life. And not just succeed, but overcome the odds and become wildly successful. They chose as their model a man who had done it all - Alexander Marcus; a black man who raised himself up from poverty to become one of the wealthiest, most powerful men in America. The imprinting is effective. The children are focused, driven. They are inventive, intelligent, and love learning. But there is a mysterious darkness to them - a ruthlessness that is surprising. Renny Sand first met the children as a journalist covering the sensational trial of a preschool operator. There were terrible charges of sex abuse, but the thing that stayed with Renny was the strange poise and power of a group of eight year old children. That, and the face of the mother of one of them, Vivian Emory.Now the children are...