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.
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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.
In 1991, Dorothy Donovan was murdered in her Dover, Delaware home and police are skeptical when her son Charles Holden stated that she was murdered by a hitchhiker he had picked up.
A girl claimed she had been abducted. She recounted what happened but things didn't add up to police.
In 2006, Nevada politician Kathy Augustine died mysteriously during a hard-fought re-election campaign and the medical examiner could neither isolate the cause of death.
A woman was found dead on the bedroom floor of her apartment. The crime scene yielded little of value and investigators wondered if they would find enough evidence to make a case.
In 2001, Ginger Hayes and her infant son Nicholas were abducted during a carjacking and the crime had been reported by a witness within minutes of occurrence.
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.
In 1993, young mother Tammy Tatum was sexually assaulted and murdered in her Longmont, Colorado apartment.
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.
One warm summer afternoon, the town of Verona, Wisconsin faced its first triple homicide. To solve the case, investigators had to delve into the world of high rollers and offshore betting.
The victim was a self-made man who never minced words. Perhaps he was murdered by a disgruntled client.
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 woman in the back of the truck was flailing her arms, screaming. They thought she was doing something dangerous for the fun of it.
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.
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.
In 2000, teenager Tara Munsey went missing after a work shift at a Virginia restaurant. Did she run away, or was she the victim of foul play?
A woman was found dead on the bedroom floor of her apartment. The crime scene yielded little of value and investigators wondered if they would find enough evidence to make a case.
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.
For twelve years, the murder of a young woman went unsolved, but with the passage of time came the development of technology. Could a used tissue found at the crime scene give police the evidence they need to bring a killer to justice?
Paul Gruber's daughter suspected something was wrong when she received birthday cards addressed from her father, but written in a stranger's handwriting.
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