Her mom went missing when she was little and now she's stuck living with her father's insane behavior. Sixteen year Olivia Mason lives under her dad's rules, one being that all the mirrors must be covered. Her father portrays them as a danger. But when his mental state spirals out of control and Olivia takes action she discovers the sinister truth her father has hidden from her for years. Now things are turning dark for her. She sees things, can't sleep peacefully, and can't get her mind off the mirrors. She'd do anything to get her life back, even lose her mind.