The memory keeper's daughter

A doctor is forced by a storm to deliver his own twins--a healthy boy and a girl with Down's Syndrome. To protect his wife, the doctor asks his nurse to take the baby girl to an institution and never reveal her existence. Yet the nurse decides to keep her and moves to another city to raise her as her own child. But the destinies of the twins, Paul and Phoebe, are intertwined as the secrets of their families are revealed.