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.
In 2005, David Castor suffered a slow, agonizing death over a period of days. His wife maintained it was suicide, even though it was done with antifreeze.
Foul play is suspected when Fort Worth factory worker Glenda Furch disappears after completing her shift.
Rachael Mullenix, 19, was convicted of stabbing her mother and then packing her bloodied corpse in a box.
Responding to a 2008 garage fire, Illinois emergency response discovered a man crushed beneath a truck.
When DNA proves that a man who practically admits to a brutal attack is innocent, police wonder why he is willing to take the blame.
Avis Banks and her unborn child were brutally murdered. The body was discovered by her fiancé, Keyon Pittman. When police learned that Pittman was having affairs with other women, he became the prime suspect.
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.
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.
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.
When a hit-and-run boating accident caused a death, police must search for one boat among 1200 others.
The victim was a self-made man who never minced words. Perhaps he was murdered by a disgruntled client.
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.
When a hit-and-run accident claimed the life of a high school athlete, everyone in town mourned his passing. Finding the killer was a long shot at best.
When an off-duty policeman was shot dead, his fellow officers were determined to solve the crime. They needed clues to find the killer and they discovered them in tiny fibres and an asthma inhaler.
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.
How did the stalker obtain the security system code for his victim's home? How did he steal her personal photographs? Police needed answers and they found them in the most unlikely of places.
The medical examiner ruled a death an accident, but the detectives thought the evidence indicated otherwise.
In 2003, Tiffany Rowell and three of her friends were brutally murdered in affluent Clear Lake, Texas.
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.