Investigation Discovery continues its heritage of providing in-depth, compelling documentaries & series that challenge viewers to think about key issues that shape our culture and define our world.

Investigation Discovery HD

Investigation Discovery

A husband becomes the prime suspect when his wife goes missing as police discovers his checkered past; lacking a body or evidence of foul play, detectives hope to gain a confession from a man they realize might be a cold-blooded psychopath.

Signs of a Psychopath

I Am the Worst Husband

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

A young man's confession to participating in a plot to murder another teenager stuns police in a small Florida town; detectives uncover a plot involving a manipulative ex-girlfriend and a young psychopath with the desire to kill.

Everybody Was Agreeing to It

Police catch a break on three cold case murders when emerging DNA technology makes a stunning match, a 73-year-old man who's been in prison since 1993; detectives interrogate the frail man whose harmless façade is hiding a murderous psychopath.

The Package Killer

Terror rocks an Ohio town when a mother, her two kids and a close friend vanish; investigators track down the prime suspect and uncover a house of horrors; detectives find themselves dealing with a psychopath with a bizarre obsession.

It's Called Closure

A teenage couple goes on the run after an attack on the boy's sister; a search leads officers to the girl's grandparents' home, where they find the bodies of the elderly couple and uncover a fantasy killing concocted by the psychopathic lovers.

Let's Be Bonnie and Clyde

When a loving husband turns up murdered in his Loveland, Ohio home, the prime suspect is his troubled wife, who claims to have little recollection; detectives uncover her story is nothing but the manipulation of a vindictive person.

They Named Me Stormy

After the murder of a rural Virginia couple and the disappearance of their adult son, detectives wonder who could have acted with such rage; when the son resurfaces, investigators come face to face with a true psychopath.

I Felt a Release

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

S9 E4 | It's Called Closure