SIGNS OF A PSYCHOPATH is a half-hour docuseries that revisits some of the most dangerous killers in modern history, reviewing news footage -- and the words of the killers themselves -- to see which terrifying traits each killer exhibited: charm, narcissism, lack of empathy, impulsiveness, manipulation, deception. In the series opener, "Chase Me," a 50-year-old woman is found dead in her home. All that's left behind is a note that reads, "Chase me." But when detectives uncover the killer, they quickly discover they have come face to face with a remorseless psychopath.