For years, a woman suffered from what appeared to be the unpleasant side effects of lithium, a drug prescribed to treat bipolar disorder. When she died, investigators had to determine if her death was due to natural causes, suicide, or murder.
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In 1993, worldwide attention focused on a rash of robberies that targeted tourists in Florida.
A woman, who had recently rejected a co-worker half her age, ends up dead in her driveway.
The investigation into a brutal attack on two boys near a pond relied on evidence fished out of the murky water. It was the first case where diatom evidence was used to place a suspect at the scene of the crime.
When a young girl is found dead, her parents tell the police that dogs attacked and killed her.
A 19-year-old woman was found dead in her car. The scene had been staged to make murder appear to be suicide. During their investigation, police discovered the victim was involved in a love quadrangle, giving several people a motive to kill her.
A woman who was known to have suffered from depression apparently took her own life.
Forensics contradicts a husband's confession to his wife's murder.
A couple is found dead in a car with broken windows but no shattered glass.
Police were puzzled by an obscure print found at a crime scene where one man had been killed, and two teenage girls were seriously injured. Neither of the girls could identify their attacker.
A flawed envelope is an unlikely clue to identifying a killer who laced a water cooler with cyanide.
A human skeleton was discovered in the North Carolina marshlands.
A child's father was suspected when she was killed, but years later, police learned a convicted murderer lived nearby. Tiny drops of blood helped police solve the crime.
A serial arsonist was on the loose in Washington, DC.
Highway policeman is shocked when a bloody traffic collision is classified as an accident.
Sitting in the apparently safe lobby of his father's gun club, a teenage boy is mysteriously shot dead.
A cigarette butt may provide the evidence needed to catch a serial rapist.
Boat passenger comes forward when the boat kills a young man in a hit-and-run.
The tests of a plant pathologist and a dendrochronologist lead to a surprising revelation.
A teen's role in a high school production of "Hamlet" exposes the truth behind her father's death.
Four young adults are murdered in an affluent Texas neighborhood, with little evidence.
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