Five months ago, a car accident left Diana Sparrow badly injured and missing a few months of her memory. She can't turn to her former friend Val, who's been sleeping with Diana's husband Jonathan, but she might find some comfort in newcomer Cole Pelham. Yet the closer they become, the more Diana begins to wonder what really happened that night—and how Cole might be connected. As her nightmares become too real to ignore, Diana will have to face the unthinkable—and do the unforgivable.