As much as Libby Hall needs a vacation, she's never considered taking one until she sees the note for a house swap. Suffering a miscarriage was a personal turning point. Saving a child from a burning school was a public one. Just as the emotional fallout of both incidents takes its toll, along comes her lifesavers--the Heywoods, a couple in need of a getaway of their own. Libby and her husband Jamie can't believe their good fortune when they arrive at the Heywood's isolated seaside estate with its panoramic views--and just in exchange for their drab two-bedroom apartment. How generous of the Heywoods! Yet how odd. Libby almost feels guilty until the home yields disquieting surprises: a fortune in hidden surveillance equipment, a stranger in the garden who watches them, and the make-shift operating room in the basement... When Jamie falls dangerously ill, all Libby wants is to return to their comfortably imperfect lives. But it's already too late. Libby has just discovered the Heywoods' biggest secret. And when it appears that even Jamie is hiding something from her, Libby's paranoia gets the best of her. It should. For she has buried secrets of her own. As the past comes crawling out of the darkness, Libby fears she's walked into an elaborate trap. But who has set it? What do they want of her? And what is she willing to risk to make it out alive...?