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

Police investigating the murder of a beloved mother and grandmother must realize that a tiny scrap of paper at the crime scene is the key to finding her killer.

On the Case With Paula Zahn

Evil at Its Highest Point

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

Will a hidden message discovered on the body of a murder victim be the key to finding the young woman's killer?

A Deadly Message

Investigation Discovery HD

The mysterious details of one teenager's murder may lead police to solve two brutal murders committed by the same deadly predator.

Vanished Into Darkness

A young waitress is attacked as she returns home from work late at night.

Justice for Christine

Can police ease the fears of a close-knit community following the murder of a beloved restaurant owner?

A Bridge to Disaster

Can police solve the disappearance of a teenager kidnapped out of her own bed in the middle of the night?

Lost, but Not Forgotten

When a young woman turns up murdered, police desperately try to retrace her last known movements; however, what they discover reveals two shockingly different possibilities of how she was killed.

A Mystery in Lakeland

Amanda Blackburn and her unborn child are killed during a home invasion; with no forced entry and few leads, investigators have to piece together scattered clues, surveillance footage, stolen items and witness accounts.

Why Would Someone Shoot Amanda?

When two young women are murdered on the same scenic bike trail just months apart, police are baffled by the similarities of their deaths.

Trail of Terror

Can police use a blurry image taken just seconds before a California woman's disappearance to find the man responsible for her gruesome murder?

A Picture Worth a 1000 Words

Will a heartbroken mother's quest for justice lead police to solve the murder of her daughter and a close friend?

A Nightmare at Dawn

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Veteran journalist Paula Zahn unravels criminal investigations by featuring the opinions of law enforcement officials, the families of the victims and the incarcerated, lawyers from both sides and first-time TV interviews with convicted murderers.

S28 E11 | Evil at Its Highest Point