A devoted father lies dead from gunshot wounds in his home. Police soon realize his mother-in-law is conspicuously absent and seek her for questioning. Also, a 16-year-old boy kills his parents, and investigators determine he's a vicious psychopath.

A man's online fantasy life bleeds into reality when police accuse him of killing his family after spending their fortune. Next, investigators in pursuit of a woman's murderer follow a trail of clues that leads them to a possible serial killer.