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Signs of a Psychopath

  • 2020-2025
  • 10 seasons
  • Discovery+
  • Documentary, Suspense
  • TV-14

This harrowing series revisits some of the most brutal killers in modern history, reviewing news footage and the words of the killers themselves to see which terrifying traits each killer exhibited. What are the signs...of evil?

Season 3 Episode Guide

8 Episodes 2021

Episode 1

I Am Strange

Tue, Sep 14, 2021

A heartless gunman shoots a young couple with devastating consequences.

Episode 2

The Good Girl

Tue, Sep 14, 2021

A home invasion leads to the revelation of a shocking double life.

Episode 3

Do Her Mortal Harm

Tue, Sep 21, 2021

The naked and mutilated body of a mother turns up at the bottom of a ravine in Baton Rouge, Louisiana. When tire tracks lead investigators to a suspect, they encounter an undetected serial killer who confesses to butchering eight women over a decade.

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Episode 4

I Killed Him. Boom. Boom.

Police find a father of two dead and interview his family, but one member is missing.

Episode 5

You Met the Angel of Death

Tue, Oct 5, 2021

When a graduate student suddenly goes missing, the family he's staying with immediately contacts police. Days later, a horrific discovery forces investigators to face a rare kind of monster.

Episode 6

I'm Just a Sick Murderer

Tue, Oct 12, 2021

An officer response to a 911 call placed by a robber on the lam who feels compelled to turn himself in. When the officer arrives at the scene, the criminal confesses to much more than breaking and entering.

Episode 6

She Isn't Acting Dead

Tue, Oct 19, 2021

A man crashes into the back of a woman's vehicle early one morning. Officers respond to the scene only to find her car abandoned. Detectives are horrified to discover a sadistic psychopath who admits to murder.

Episode 7

She Isn't Acting Dead Enough

Tue, Sep 28, 2021

Police respond to a 911 call to find a father of two dead in his home with 15 gunshot wounds. Police question the family, but one person is missing, his mother-in-law. Now they must determine if this grandma could be a deadly psychopath.

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