They were made to forget. But they'll never forgive. Everything about Anna's life is a secret. Her father works for the Branch, at the helm of its latest project: monitoring and administering treatments to the four genetically altered boys in the lab below their farmhouse. There's Nick, solemn and brooding; Cas, light-hearted and playful; Trev, smart and caring; and Sam . . . who's stolen Anna's heart. When the Branch decides it's time to take the boys, Sam stages an escape. Anna's father pushes her to go with them, making Sam promise to keep her away from the Branch, at all costs.