
Forensic Files
When a man's story of a killing contradicted physical evidence, investigators turned to forensic science.

When a man's story of a killing contradicted physical evidence, investigators turned to forensic science.

In 2006, Texas real estate agent Sarah Anne Walker was found brutally murdered in a model home.

A serial killer was on the loose and police had to find him before he struck again. Their most promising lead was an unusual one: a bloody fingerprint on the body of one of the victims.

A bullet-riddled car, a missing driver, and no witnesses, an ambush or a random attack the clue was something so tiny, it was measured in millionths of a meter.

A bomb, constructed to cause as much damage as possible, kills a victim with deadly force and flame. When a search yields some tiny clues, police are able to identify the killer.

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.

In little more than a month, two women who lived in the same apartment complex were brutally murdered.

Two suspects are linked to a murder by bloodstained boots and a gun, but the owner of the items says he has never met the victim.

In 1994, Shannon Melendi disappeared while at Emory University. Her disappearance remained a mystery for ten years, until new scientific testing cast a different light on Colvin "Butch" Hinton.

An 82-year-old woman was found dead. Clues on the victim's body would tell police what happened that night.

The victim was well liked and successful, which made the brutality of the crime even harder to understand.

The woman in the back of the truck was flailing her arms, screaming. They thought she was doing something dangerous for the fun of it.

When a little girl got sick and died, investigators were stumped. Was it an accident, an unexplained illness or murder?

The crime scene was especially violent: A couple had been shot to death. Was their teenage daughter complicit?

When Kristine Fitzhugh failed to show up for her music class, her husband found her dead at the bottom of the stairs of their Palo Alto home. Further investigation reveals evidence of murder in the kitchen.

Doctors don't know why a scientist is gravely ill. When tests reveal the cause, it's too late to save him.

In 1989, the dead bodies of Joan Rogers and her two teenage daughters were found floating in Tampa Bay.

A woman was shot to death in her Connecticut driveway. Now police must determine if love had turned deadly.

In the early hours of Christmas Eve, a college co-ed was abducted from the parking lot of her apartment.

A skeleton was discovered in the North Carolina marshlands. Investigators learned she'd been dead for months.