What do you fear most? That is the question Sara Doyle is asked when she wakes up chained to a dingy toilet after a night out with her girlfriend. But what is her sociopathic captor, Russ St Cloud really after and can she make it out alive? And what about the spiders? Sara has become the object of Russ' obsession after a fateful day when they were young children, a horrible event, almost unspeakable, but one more event that scars Russ and contributes to the psychopathic behavior that ultimately makes him into the killer he is.