An arson investigation leads police to a freezer that contains a dismembered body; frozen blood in snow leads to a search for a missing man.
A manhunt leads to Missouri after a federal parole officer's body is found in the suspect's home.
A single dog hair is the only evidence in a woman's murder; two children are killed and left outside.
Tracking a serial killer in Louisiana with the help of technology that traces DNA ancestry.
Police respond to a call about a stabbing, but find that the victims have all been shot.
A grisly find is made in New Hampshire's Piscataquog River.
Laser technology is employed to match wood samples retrieved from the scene of a homicide; scientists use liquid nitrogen to freeze evidence collected from the site of an unsolved death.
The murders of two women and the technology used to crack the cases are examined.
Two murders may be linked despite the 12-year gap between the crimes. Investigators examine paint chips from a car and a scuffed cowboy boot to try to catch the killer.
The 2003 sniper attacks in Columbus, Ohio, and the technology that helped authorities identify the shooter.
Forensic detectives examine an empty cigarette pack and tiny metal fragments embedded in the jacket of a body found near train tracks in King County, Wash.
A husband-and-wife hunting trip leads to the man's death and sparks a murder investigation.
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