Signs of a Psychopath, The Monster Has Always Been There

A frantic graduate student calls 911 to say she just shot her boyfriend, a 29-year-old attorney, in self-defence. Police soon discover that her story doesn't add up, and realise they are face-to-face with a remorseless, calculating psychopath.

Eleven operators receive a chilling call from a teenager claiming he stabbed his parents to death. Unsure if the call is a Halloween prank, police race to the scene and discover it is no hoax, and that the caller is a burgeoning psychopath.

A teenager is arrested after his mother finds the body parts of a missing drifter in his bedroom. While in custody, police uncover that the suspect is a sadistic psychopath who idolises infamous serial killers.

A 911 operator receives a distressing call from a man repeatedly claiming that he just stabbed and killed two people. Police quickly discover that not only is the call genuine but that the caller is a violent and unpredictable psychopath.

In rural Missouri, police receive a haunting call from a 50-year-old man claiming he shot three people inside his home. Detectives uncover that this impulsive massacre has a motive, and that the killer is a psychopath obsessed with control.

A concerned mother reports her 24-year-old son missing. He has fallen under the spell of a 47-year-old widowed woman. Detectives soon realise she's a sexual psychopath who has claimed the lives of more than one admirer.

A road rage incident turns deadly as an elderly man is beaten to death by a teenager who claims he was acting in self-defence. Detectives not only find holes in his story but uncover that he is a remorseless and utterly manipulative psychopath.

A mother awakes to find her two sons with their throats cut. Their aunt's boyfriend confesses to his mother, and she wears a wire to capture her son. As he admits his guilt, it's clear how a psychopathic rage led to horrific violence and innocent victims.

For a psychopath, spouses, children, siblings, and parents are not the beloved people in their lives — they're simply potential victims. Experts delve into chilling cases of what's known as 'family annihilators.'