It's been thirty years since the terrifying abduction of twin sisters Rebecca and Molly Underhill by a deranged man who lived in a cabin behind their house. Fearful of retribution against their family, the girls kept the incident secret. Rebecca, now a painter and art teacher, suddenly begins getting mysterious text messages. Is Molly - long lost to cancer - trying to communicate? It coulnd't be their attacker from so many years ago; he was imprisoned for a similar crime at about that same time. Surely, he'd still be in jail or dead by now - wouldn't he? When one of Rebecca's art students - an autistic savant - gives her a series of paintings, Rebecca realizes the paintings' scenes match the nightmares she's had every night since the horrific ordeal three decades earlier.