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

Investigation Discovery

Going inside prison walls to interview evil itself as relatives of killers, along with killers themselves, tell their chilling tales; questions these killers have never been asked before result in powerful, unsettling and contentious encounters.

Evil Lives Here: The Killer Speaks

A Killer's Words

Josh Clark takes what he wants; his family loves and supports him, but he's intent on destroying them; no one sacrifices more for him than his grandmother, yet she's the one who suffers his wrath; now, his mom and brother want him to tell them why.

I May Be Cold-Blooded

Growing up, Ashley is a bright kid, but as she grows, she becomes troubled and violent; her father and sister watch as she changes into someone they no longer recognize; when she brutally murders her own grandmother, she tears the family apart.

She Was All Darkness

Katie always knew her grandpa, Buster, as a kind man; he has a dark past but is the center of their big, close family; then comes the murder; he is not the man Katie thought she knew; she finally learns the hard truth about her grandfather.

Grandpa's an Assassin

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.

Raised in foster care, Kristin and Brandon only had each other; Kristin struggles to understand how her big brother became a cold-blooded killer.

A True Act of Evil

A husband heads down a dark and violent path, ending in the brutal murder of his own parents; his daughter and wife want to know why.

Husband, Father, Killer

Jenn grew up with a violent big brother, Jimmy, who preyed on his own family; she wants her incarcerated sibling to admit that he killed their mother.

He Murdered My Mother

Audrey agonizes about why her brother murdered their mother and sister in cold blood.

I Want To Be Seen As Evil

Lisa barely survives when her lover Corey attacks her, but the next woman does not.

My Mind Goes to Murder

Investigation Discovery HD

Gripping narratives that provide an insight into the minds of those connected to notorious killers.

My Father, the Cannibal Part 2

My Father, the Cannibal Part 1

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Programacion original educativo e informativo en Espanol con la marca del canal Discovery.

S2 E7 | Grandpa's an Assassin