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Investigation Discovery continues its heritage of providing in-depth  compelling documentaries & shows.

Investigation Discovery

Experts delve into chilling cases of "family annihilators" - psychopaths who view spouses, children, siblings, and parents not as beloved people but simply as potential victims.

Signs of a Psychopath

Ties That Bind

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 violence.

I Am the Weirdest Guy

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

Make Sure You Get My Good Side

A concerned mother reports her 24-year-old son missing, as he fell under the spell of a 47-year-old widowed woman; detectives soon realize she's a sexual psychopath who has claimed the lives of more than one admirer.

He Had It Coming

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.

I'm Telling You Im Dangerous

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.

The Monster Has Always Been There

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 psychopath who idolizes serial killers.

It Was a Frenzy

Operators receive a 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 psychopath.

Family Comes First

A graduate student calls 911 to say she just shot her boyfriend, a 29-year-old attorney, in self-defense; police soon discover that her story doesn't add up and realize they are face-to-face with a psychopath.

I'm Not Your Typical Murderer

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Revisiting some of the most dangerous killers in modern history to see which psychopathic traits they exhibited.

S7 E9 | Ties That Bind