In 2000, construction manager Darrell North was found dead in his work trailer in Ft. Worth, Texas. When investigators arrived, they found that he had been stabbed 46 times.
The body of a college co-ed was found on a farm covered with her own denim as well as the jeans of the killer.
In 1997, Kelly Eckart's car was found, with her belongings still in it, after she worked a late shift in Franklin, Indiana. Days later, her body was found in an isolated ravine.
In 2002, funeral director Lonnie Turner, Sr. was found shot to death. His son Lonnie Jr. became the prime suspect, particularly after it was discovered that the murder was committed with his gun. However, he had an alibi for the time of the murder.
The brutal murder of a state park employee over $2,000 rattles her co-workers and tourists while leaving police to sift through hundreds of leads.
Police are able to create a composite sketch of a man burnt beyond recognition. But tracking the killer is more challenging.
In 2008, the body of Colorado real estate developer Alan Helmick was found by his wife, Miriam, who then became the prime suspect.
In 2006, Darlene VanderGiesen received threatening emails and then disappeared. Tracking the source of the emails led police to the home of Daphne Wright, where they believe a murder was committed.
A killer made great effort to obscure the shoe impressions left when he tracked blood on the floor, but he ended up creating new incriminating evidence...
The killer probably hoped to cover his tracks by staging the crime scene. But investigators saw through the attempt almost immediately.
Lives changed in the 20 years following an unsolved murder, and so did forensic science. In time, a high-powered microscope and DNA profiling revealed a clue no one had seen before.
In 2007, Shamaia Smith disappeared from the strip club she worked at in East Hartford, CT. Police look at various customers of the strip club, but focus on local businessman Kenneth Otto.
On Halloween night 2004, Adriane Insogna and Leslie Mazzara were brutally murdered in their Napa home.
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.
A woman was shot to death in her Connecticut driveway. Now police must determine if love had turned deadly.
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.
Police get a clue about a couple who disappeared on Memorial Day weekend during an in-progress robbery.
An investigation into the murder of a World War II veteran slowed to a halt when the prime suspect had a solid alibi. But a lucky break led to a shady character who wore distinctive boots.
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.
A body is found stuffed into a suitcase forcing the police to search though the landfill for another missing victim.