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

The trial reveals more horror, and a woman interviews the killer in jail.

Lost Women of Alaska

No Longer Silent

As Native women vanish in Alaska, police must look to the past and a warning that went unheeded to discover the truth about a serial killer; as the net tightens, questions only grow about how many women this killer could have silenced.

Manhunt

A phone containing murder evidence prompts police to investigate a killer.

The Missing

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S2 E3 | No Longer Silent