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

Investigation Discovery

When 12-year-old Aynis Vargas dies in a seemingly random attack on a party, investigators piece together clues from social media, cell phone data and surveillance footage to try to get justice for Aynis, her family and the whole community.

Caught in the Net

Random Data

When widow Valena Shepherd is found dead at home, police suspect foul play; investigators follow digital clues that suggest Valena knew her killer and hope the data contained within a digital heart monitor device pinpoints the perpetrator.

The Vest

After the murder of young mother Morgan Ashlye Fox, investigators don't have much physical evidence; with numerous suspects in the frame, digital evidence reveals the secrets of a monster hiding in plain sight.

Monsters Are Real

The identity of the killer responsible for stabbing 22-year-old Maurice Skeen during a street brawl in Albany, N.Y., lies hidden in chaos; facing an almost total lack of physical evidence, detectives must decode the digital to unmask the perpetrator.

Out of Chaos

When police find 64-year-old nurse Athena Valentiny brutally murdered in her home, investigators follow the digital trail her killer left behind; they cross-reference the digital evidence with surveillance video to reveal who took her life.

The Dog Knows

When family man Ricky Saxton is found murdered, investigators turn to a forensic data specialist at the FBI to help locate a missing piece of the puzzle; a deleted snapshot buried deep within the data leads them to Ricky's killer.

Digital Crumbs

When single dad David Heisler goes missing, digital clues lead detectives into the desert, but the trail stops cold; investigators ask digital forensics experts to help them unravel this twisted mystery and reveal the truth of what happened.

A Hole in Time

Two young men are shot dead in the middle of the night, and the only witness has no idea who the gunman is; Omaha PD detectives turn to digital forensics, hoping hidden data buried in the victims' cell phones can help track down the killer.

The Man in the Mirror

Gripping true stories of investigators entering the digital world to solve murders; in each case, detectives are up against a lack of physical clues, but digital trails left behind help lead them to the killers.

S2 E4 | The Dog Knows