Three days before Elena Vale is supposed to marry Daniel Mercer, his dead wife knocks on her door.Claire Mercer disappeared five years ago. No body was ever found, but she was eventually declared dead. Now she is standing on Elena's doorstep with a warning:Do not marry Daniel.Daniel insists there is an explanation. But when Elena discovers a hidden key inside their lakeside home, the mystery reaches far beyond Claire's disappearance. A forgotten road. A secret locke...