Clones Rachel and Theo now live thousands of miles apart. They keep in touch, but things just aren't the same. When Rachel discovers that evil scientist Elijah is still working in secret for a section of the government and about to murder Daniel, she sets out to rescue the little boy, but her plans backfire with disastrous consequences.

Across the Atlantic, Theo becomes suspicious when Rachel misses their weekly internet chat. He discovers a report online saying she's killed herself and travels to Scotland to find her, certain that she has been kidnapped. A clue leads him to Elijah's mysterious clinic, where the sinister Aphrodite Experiment is underway. But what is Elijah really planning? Why does he need to track Rachel down so badly? And will Rachel and Theo be able to pay the ultimate ransom that he demands?