A killer tried to incinerate and destroy everything that could link him to his crime. But in doing so, he inadvertently created new forensic evidence, evidence which came to light with a technique never before used in a criminal investigation.
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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.
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.
A man died in his home after a history of heart disease. Rumors surfaced that the death was no accident.
British detectives worked with a pioneering scientist to solve crimes of sexual assault and serial murder. This 1986 case marked the first time DNA was used as evidence in a court of law.
A killer tried to incinerate and destroy everything that could link him to his crime. But in doing so, he inadvertently created new forensic evidence, evidence which came to light with a technique never before used in a criminal investigation.
An investigation of a pediatrician, prompted by the death of one of her patients, leads to a Texas hospital where the pediatric mortality rate is higher than at any hospital in the country.
In 2002, a small community in upstate New York was devastated when Patty Wlasiuk died in a truck accident. But burdock seed pods found in her hair and on her clothes indicated that this was no accident - it was cold-blooded murder.
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.
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.
Bombings are difficult to solve, because the perpetrator isn't usually at the scene, and the evidence goes up in smoke. In this case pieces of plastic the size of grains of sand hold the key to a man's murder.
In 1981, six-year-old Cassie Hansen disappeared from her St. Paul, Minnesota church during an evening service.
A California teen went missing. Police suspected she'd run away until her body was discovered in a ditch.
In 1989, 4-year-old April Loveless was found dead in the backyard of her Texas home. Her mother Debbie Loveless and stepfather John Miller told police that she was attacked and killed by the family dogs. Investigators did not agree.
In 2002, the eyes of the world were on Virginia and Maryland. A serial sniper was on the loose, killing innocent, unsuspecting citizens. Just how was he caught?
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