Now I Lay Thee Down to Sleep

This horror tale revolves around two fathers, John Roberts, a Philadelphia police officer, and Frank Bower, owner of a car repair shop. After learning that his wife is cheating on him, John is left heartbroken. Then his life takes a devastating turn when the unfaithful woman turns up dead days later. The unstable police officer vows to track down and punish the murderer. His search leads him to Frank, but as his sanity continues to slip, then discovering that he is a suspect in his wife's murder, John finds it harder and harder to seek out his revenge. Will John get the man who killed his wife before the authorities do? Is Frank the killer, or was it John himself? And will these series of events prevent John from moving on and living a normal life with his four year old son?