Robin Cook, master of bestselling medical thrillers, answers the "What's the worst thing that could happen?" question in this plot-twisting novel in which villains with no sense of ethics or social responsibility get their greedy hands on the newest cloning technology. It starts when a couple of Harvard graduate students answer the Wingate Clinic's ad for egg donors. The women figure on financing a year in Venice and the down payment on a Boston condo with the extraordinary sum they're promised. But a year later, the heroines feel the emotional need to seek out the children they've made possible for infertile couples.