A high school gym teacher gives his friend a ride home but never returns his wife and friend receive letters saying he started a new life, but they suspect foul play despite no body being discovered.
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One investigator's quick thinking helps him capture a shoe impression made in snow before it melts away.
A young, attractive hairdresser was sexually assaulted and murdered in her own beauty salon. The evidence at the crime scene didn't match any of the suspects and the case went cold for ten years.
A suspicious fire swept through an apartment killing two young women. A closer look at the fire scene revealed something hidden in the ashes.
In 2003, Tiffany Rowell and three of her friends were brutally murdered in affluent Clear Lake, Texas.
The victim was well liked and successful, which made the brutality of the crime even harder to understand.
Police don't have a basis for comparison to match shoe impressions, blood drops and DNA evidence from a murder scene.
A suspect's former lover comes forward with a tale of murder, mutilation and cremation, but there's no way to test the story's validity until a plant pathologist and a dendrochronologist conduct tests where the cremation supposedly occurred.
When two boys are brutally attacked, investigators rely on evidence fished out of a nearby pond. It became the first case where diatom analysis was used to place a suspect at the scene of the crime.
A serial bomber was waging a vendetta against the legal profession. A judge, two attorneys and even a courthouse had been targeted. Employing a range of forensic techniques, investigators used evidence from the bombs to lead them to the perpetrator.
Lisa Manderach and her daughter Devon left their Pennsylvania home to go shopping but didn't return home.
Forensic computer analysis, blood spatter analysis and a painstaking investigation lead police to a lawyer husband Michael "Mick" Fletcher with a motive to kill his wife since he was having a sexual affair with judge Susan Chrzanowski.
When a talented television news anchor is shot to death outside her home, it appears to be a crime of passion perpetrated by an obsessed fan.
A woman is found dead in a ravine, but crucial crime scene evidence had been washed away by severe thunderstorms. Almost 20 years later, an old hat brought the killer to justice.
When the mail-order bride of a former army sergeant goes missing, investigators look into the deaths of the man's previous two wives.
On a cold December night in 1993, Rose Larner stopped in a convenience store on her way to her boyfriend's house. She was never seen or heard from again. A tiny clue found years later revealed a tragic tale of drugs, romance and revenge.
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.
A woman was reported missing after a fight with her husband. Police were suspicious of a suspect who reported a fire in his car. Two tiny drops of blood were found in the interior. A tiny clue inside the suspect's watchband helped solve the case.
The only clue recovered from a shooting is a twelve-guage shotgun. Scientists use unique methods to lift the serial number from the weapon to trace it to its owner
A husband confesses to his wife's murder, only to be found not guilty a year later when a phone tip and forensic evidence point to another.
A high school gym teacher gives his friend a ride home but never returns his wife and friend receive letters saying he started a new life, but they suspect foul play despite no body being discovered.
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