With one phone call, Jaye Garrett's life has turned into a nightmare. The beautiful and successful Boston businesswoman has been summoned to her childhood home to receive shocking news. Her brother, Patrick, has fallen desperately ill and needs a bone marrow transplant to survive. But when Jaye volunteers as a donor, she is stunned to learn that Patrick is not her biological brother. And that the emotionally frail woman who raised them from infanthood is not their biological mother. To answer the dark mystery of her own identity and to save her brother's life, Jaye must ask herself the question, Whose little girl are you?