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Revisiting some of the most dangerous killers in modern history to see which psychopathic traits they exhibited. Understanding whether it is possible to identify psychopaths before it is too late.
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Revisiting some of the most dangerous killers in modern history to see which psychopathic traits they exhibited. Understanding whether it is possible to identify psychopaths before it is too late.
A frantic student calls 911 to say she shot her boyfriend in self-defence. Police soon discover they are face-to-face with a remorseless psychopath.(S04,E04)
On Halloween, 11 operators receive a chilling call from a teenager claiming he killed his parents. Police race to the scene and discover a burgeoning psychopath.(S04,E02)
A teenager is arrested after his mother finds the body parts of a missing drifter in his bedroom. Police uncover that the suspect idolises infamous serial killers.(S04,E01)
A 911 operator receives a distressing call from a troubled culinary student after he murders his classmate's family in their sleep.(S04,E03)
In rural Missouri, police respond to a haunting call from a 50-year-old man. Detectives face an impulsive massacre and a controlling killer.(S04,E06)
A 24-year-old man falls under the spell of a 47-year-old widow. Detectives discover she's a sexual psychopath who has claimed the lives of more than one admirer.(S04,E05)
A road rage incident turns deadly as an elderly man is beaten to death by a psychopathic teenager who claims he was acting in self-defence.(S04,E08)
A woman awakens to find her two young sons with their throats cut. Their aunt's boyfriend confesses to his mother, and she wears a wire to capture her son.(S04,E07)
Experts delve into disturbing cases of psychopathic killers known as "family annihilators," who see family members as simply potential victims.(S04,E11)