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.

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On a dark and stormy night, police find a family dead in their mansion; a bloody mask lies nearby; a letter to the victim's mother hints at something darker than murder-suicide.

The Friday the 13th Murders

We All Go a Little Mad

Investigation Discovery HD

On Friday the 13th, a teen obsessed with Satan and serial killers terrorizes a small Texas town. Survivors fight to stay alive as police race to stop him before dawn during a night-long rampage that leaves the town forever changed and scarred.

Obsession To Do Evil

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This chilling six-part true crime series explores real killings that unfold on or around the infamous date. Each episode unravels a haunting case, revealing how Friday the 13th transforms from superstition into a real-life horror story.

S1 E1 | Obsession To Do Evil