There was a time when I prayed for Rachel to be real--it ended the night she tried to kill me. When Dani was eight, she fell from a building. No one believed her claim that she was pushed by Rachel, her imaginary friend. It took years of therapy to convince Dani that Rachel was a product of her own mind.Now fifteen, Dani wants to make it as a dancer. But a deadly freak accident sends her a terrifying message: Rachel is back, she's real, and she'll...