Police interrogate a woman's boyfriend after discovering her fatal car wreck isn't an accident at all; a video shows an emotional mother's love for her toddlers, but a closer look reveals the tear-free stare of a killer.

A man kills his girlfriend and then terrorizes her daughter, but detectives discover this is not his first murder; a sadistic Texas serial killer who claims to have 60 victims agrees to an interview days before his lethal injection.