Amanda comes from a small mining village in North Wales where you do not expect momentous things to happen, until horrific murders are committed. After marrying Paul, they move into a big house on the mountain where the only neighbours are sheep. Paul dies suddenly and tragically and Amanda is left alone. Many years ago, a family of disturbed individuals inhabited the house, the family was incestuous and the one son they had was locked away for several years in an institute for the criminally insane. Now he is better, and what's more, he wants his house back. In addition, he will do anything to get it. After Amanda comes face to face with the serial killer, she hides in the basement with her child; she finally uncovers the horrific secret of what happened to the last family who suddenly disappeared without trace.