Sometime during a neighborhood Christmas party, five-year-old Melissa Brannen disappeared. Investigators turned to forensic science to help them see what the witnesses missed.
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In 1988, the body of a young woman was discovered in an Ohio river. Most of the evidence had been washed away, but the victim's 6-year-old son unwittingly told investigators all they needed to know - without saying a word. The clue was in his genes.
In 1996, Derrick Duehren returned to find his Oregon home burned to the ground. His wife's charred remains were later found in the rubble.
No one in a residential community saw anything the day one of their neighbors was brutally murdered. Fingerprints found at the crime scene helped investigators to apprehend the presumed killer.
When a man's story of a killing contradicted physical evidence, investigators turned to forensic science.
A Michigan State University grad student disappeared and was presumed dead. With the help of a professor of geological sciences, police hoped to get the "dirt" on her killer.
When a talented television news anchor is shot to death outside her home, it appears to be a crime of passion perpetrated by an obsessed fan.
It's usually easy to determine how a criminal entered the crime scene. But in this case, it was far from clear. It looked like the killer vanished into thin air...and perhaps he had.
A skeleton was discovered in the North Carolina marshlands. Investigators learned she'd been dead for months.
A fireman died from what appeared to be heart disease, but his family was skeptical of the cause of death.
Foul play is suspected when Fort Worth factory worker Glenda Furch disappears after completing her shift.
Sometime during a neighborhood Christmas party, five-year-old Melissa Brannen disappeared. Investigators turned to forensic science to help them see what the witnesses missed.
On the way to Yosemite National Park, a car carrying three Secret Service agents collided with another car.
A woman is killed while walking her dogs in the woods. Since she has no enemies and her husband has an alibi, police assume it's a hunting accident - until they find a strange letter, allegedly written by the woman before her death.
When Joann Katrinak is found dead in a corn field with her son, the obvious suspect is her husband. But insects found on the bodies reveal a vital clue which uncovers a twisted story.
A woman who was known to have suffered from depression took her own life. But her sister told police that she said if anything were to happen to her there would be a note in the china cabinet.
After shooting his victims in the head, the killer staged the scene, placed the incriminating evidence into a plastic bag and tossed it into the river.
The murder of a millionaire indicated robbery, but investigators wondered if there was something more.
The victim had been sexually assaulted and stabbed to death on the beach. A pair of men's tennis shoes was discovered near her body.
A man is found dead in his home, and his ex-wife has a perfect alibi. To determine time of death, investigators need to know when the victim ate his last meal.
A woman disappeared and her husband became the prime suspect especially after police found a huge bloodstain on the carpet of their bedroom. Complex DNA testing proved it was the wife's blood. Now all they had to do was find her body.
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