A young woman suddenly becomes critically ill, eventually leaving her unable to walk. A bone marrow test reveals the cause: arsenic poisoning. Investigators must determine if the poisoning was caused by groundwater contamination or something more sinister.
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A woman who survived a deadly childhood fire sends police a letter charging that her father killed her mother 30 years ago.
The victim was a self-made man who never minced words. Perhaps he was murdered by a disgruntled client.
One investigator's quick thinking helps him capture a shoe impression made in snow before it melts away.
In 2003, Tiffany Rowell and three of her friends were brutally murdered in affluent Clear Lake, Texas.
No one in a residential community saw anything the day one of their neighbors was brutally murdered. Fingerprints found at the crime scene helped investigators to apprehend the presumed killer.
The body of a college co-ed was found on a farm covered with her own denim as well as the jeans of the killer.
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.
Almost a hundred vehicles were involved in the single most deadly automobile accident in American history.
When a surgeon is found dead in his home, police assume it was suicide. The investigation reveals otherwise.
The victim had ingested a massive amount of cyanide. An unlikely clue - a flaw on a mailing envelope - exposed a murderer who was willing to kill innocent people.
When Rosemary Anderson is found dead on the side of the road, her boyfriend becomes the prime suspect. He eventually confessed to her murder, but so did another man - serial killer, Eric Edgar Cooke.
The medical examiner ruled a death an accident, but the detectives thought the evidence indicated otherwise.
A young woman suddenly becomes critically ill, eventually leaving her unable to walk. A bone marrow test reveals the cause: arsenic poisoning. Investigators must determine if the poisoning was caused by groundwater contamination or something more sinister.
Paul Gruber's daughter suspected something was wrong when she received birthday cards addressed from her father, but written in a stranger's handwriting.
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.
In 1993, young mother Tammy Tatum was sexually assaulted and murdered in her Longmont, Colorado apartment.
No one in a residential community saw anything the day one of their neighbors was brutally murdered. Fingerprints found at the crime scene helped investigators to apprehend the presumed killer.
A married couple decided to escape the cold of winter with a mini-vacation in Key West. The wife went missing, and police searched every square inch of the island, they found nothing but a pair of sandals which might have belonged to her.
Almost a hundred vehicles were involved in the single most deadly automobile accident in American history.
There was no clear reason for a young, healthy college student to be dead. But when the coroner discovered a tiny clue during the autopsy, investigators were able to uncover a mystery.
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