Lopez stars as Claire Peterson, a high-school literature teacher struggling to get back in the dating game after separating from her cheating husband while raising her adolescent son. When handsome and charismatic 19-year-old Noah (Ryan Guzman, Step Up series, "Pretty Little Liars") moves in next door, Claire has a moment of weakness that leads to an intimate night together. Noah's attraction quickly turns into a violent obsession, threatening to tear apart Claire's world and endanger the people she loves.