Ronni and Brad are trapped in a loveless, sexless, marriage borne out of a one-night stand that produced their daughter. Brad returns home to Austin from a Philly medical convention a changed man. He is suddenly an attentive father and doting husband. Ronni is breathless at Brad spying through the keyhole of her bedroom door. She begins to perform for him, unknowing that she is playing a dangerous game. She is unaware that there is a third person in their marriage, someone who causes Brad to act like a Jekyll-Hyde. Ronni believes he is bipolar, never realizing that something sinister is going on until Brad returns home with a bloody knife in a Canadian travel bag belonging to someone else.
For the first time in her marriage, Ronni was feeling comfortable with the cracks beneath her husband's skin. Now, she suspects he is a murderer and she may be next on his list.