Armed with little else, police hoped the shoe impressions found at a Lansing, Michigan, crime scene would put their investigation of Audrey Nichols' murder back on track.
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In 1981, an 86-year-old California woman was murdered, and her house was ransacked. The crime would remain unsolved for sixteen years, until DNA profiling and new fingerprint technology helped identify the killer.
When a young woman disappeared, police feared she was the latest victim in a string of similar crimes. A pair of bloody gloves, unique tire tracks, and ordinary grass and pine needles provided investigators with some extraordinary clues.
Investigators sift through the ashes of a fire that killed a 40-year-old woman. The fire appeared to have been started by an unattended cigarette. On a closer look, forensic scientists discover the cause was far more complicated.
The investigation of a murder case in New Jersey is stalled until a similar attack occurs.
When the head chef of a historic Philadelphia restaurant was found dead, investigators interviewed the usual suspects: family, friends, and co-workers. As they sifted through the evidence, police uncovered a chilling tale of debt and deceit.
Investigators come to suspect a wife's bathtub drowning may not have been an accident.
Six years later, advances in DNA helped crack the death of a park employee.
For six years, a serial killer prowled the streets of New York City. He wrote letters to the police and the New York Post, indicating he would kill twelve people, one for each astrological sign.
The story of the 1984 Rajneeshee bioterror attack. Investigators uncover a plot to overthrow the government after a unique strain of Salmonella makes people ill.
Technology, cat hairs and insects point investigators to a woman's abductor.
Key suspects in woman's murder maintain their innocence. But the victim would help prove that false.
A man is found stabbed to death after a night in a strip club; a drop of blood becomes evidence.
A teenager went missing after an evening of horseback riding. Her body was found a month later, three miles from her home. The killer unknowingly left trace evidence behind, tiny but unmistakable clues which pointed to him and him alone.
Scientists and detectives use DNA to solve a string of rapes and murders.
In 2005, the body of young mother Summer Baldwin was found in a suitcase in a Texas landfill.
When 23-year-old Tina Biggar goes missing, her boyfriend and family fear she has been murdered.
Forensics study a strand of a murdered man's hair to reveal a record of his last six months alive.
A brilliant young architect became ill and died just before she was to testify in a criminal trial.
A killer assaults a young mother in her home, but despite meticulous washing, a single hair remains.
All evidence leads to the wife when a real estate developer is murdered.
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