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

Investigation Discovery

People fishing in a London canal are horrified when they reel in an old gym bag containing a collection of dismembered human body parts; police realize they have serial killer on their hands who may have been murdering women across Europe for years.

Murder Board

The Scalp Hunter

Detectives are presented with an unusual problem after dozens of people witness a deadly attack, but no one can identify the gang members involved.

Murdered by Numbers

When the day manager arrives for her shift at a coffee shop in Washington, she stumbles on the lifeless bodies of three coworkers, all shot multiple times.

Coffee Shop Killer

After a lawyer is found brutally beaten and stomped to death in an alley, detectives are faced with a daunting puzzle that includes theories about prostitution, clandestine groups and contract killing.

Dead End Alley

A couple is found bludgeoned to death in bed, and investigators learn the woman's toddler has witnessed the entire thing.

House of Terror

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Real-life stories about bewildering murder cases in which the "murder wall" plays a crucial role during the investigations.

S1 E7 | Dead End Alley