
Forensic Files
A young woman is stabbed more than 100 times. The killer leaves DNA behind, but investigators must play a cat-and-mouse game to obtain a suspect's DNA to match.

A young woman is stabbed more than 100 times. The killer leaves DNA behind, but investigators must play a cat-and-mouse game to obtain a suspect's DNA to match.

A wealthy man and his wife were attacked by three masked men outside their luxurious Louisiana home. He was shot dead and she was forced to open their hidden safe.

When court clerk Peter Porco doesn't report to his work in November 2004, a courts officer is ordered to the Porcos' family home in Bethlehem, NY.

In 1986, Gary Dale Larson was stabbed to death in his Edmond, Oklahoma home and then the killer sexually assaulted Larson's girlfriend Janet Haynes.

When a college co-ed vanished without a trace, her fellow students were concerned about her safety and their own.

Tracey Frame, 35, was convicted of killing David Nixon in April 2002 after he planned to end their relationship.

In 2008, the body of Colorado real estate developer Alan Helmick was found by his wife, Miriam, who then became the prime suspect.

A family break turns into a nightmare when the wife is found face-down in a lake with no idea whether it was murder, an accident or suicide, police turn to a new forensic technique.

A serial rapist is on the loose in a Texas town. No one knew where he'd strike next, but the audacity of his attacks and the escalation of violence against his victims made finding him imperative.

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.

Detectives search for the bombers of two churches in Illinois, hoping that the materials used in the remnants of the handmade bombs will offer the clues to catch the culprits.

Security cameras in a casino tracked a young woman's movements until shortly before she disappeared. She was never seen again.

In one of the most brazen crimes of the 20th century, the chairman of the Coors Brewing Company was kidnapped.

A security guard disappeared from his post without a trace his remains were found a year later in a remote camp site.

Seattle police had no suspects in the violent murder of post-grunge singer, Mia Zapata. More than a decade passed before the evidence could be used by forensic scientists to identify the killer.

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 2007, the Florida mobile home of Effie and Michael Ratley catches fire. Michael heroically rescues his wife and infant son. A month later, his wife is found beaten to death in a bedroom of his parents' home.

In 2003, Tiffany Rowell and three of her friends were brutally murdered in affluent Clear Lake, Texas.

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 fireman died from what appeared to be heart disease, but his family was skeptical of the cause of death.