Master of suspense Harlan Coben delivers a twisted #1 New York Times bestseller about a man who-with the best of intentions-opens the wrong door...Reporter Wendy Tynes is making a name for herself, bringing down sexual offenders on nationally televised sting operations. But when social worker Dan Mercer walks into her trap, Wendy gets thrown into a story more complicated than she could ever imagine.Dan is tied to the disappearance of a seventeen-year-old New Jersey girl, and the shocking consequences will have Wendy doubting her instincts about the motives of the people around her, while confronting the true nature of guilt, grief, and her own capacity for forgiveness...