California police had several suspects in the robbery and brutal murder of an elderly couple. Ten years later, a determined forensic scientist used material from a dentist's office to uncover ballistic evidence that had been overlooked.
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A man's wife kills herself 14 years after his college sweetheart commits suicide.
A professor of geological sciences helps police get the dirt on a woman's killer.
Ten years after the murder of a rock singer, scientists use evidence to bring her killer to justice.
An ATM transaction allows Texas detectives to pinpoint a suspect in the slaying of a teacher.
Casino security cameras offer the final images of a woman, just before she vanishes without a trace.
Two men die of heart disease six years apart and each was once married to the same woman.
A man is found strangled and burned, and the killer thinks he has destroyed all the evidence.
Cutting-edge technology proves the police arrested the wrong suspect in a young girl's murder case.
The development of technology could help solve a murder case that is twelve years old.
The kidnapping of Adolph Coors leads to one of the most intense manhunts in US history.
Ammunition box and fibers reveal the betrayal that led to the murder of a millionaire's family.
Forensics determines whether a woman's death in a fire is due to arson, murder or accident.
Tiny clues tell a lot about the murder of a young woman found in a ravine.
A man dies after falling down the stairs; a witness says one thing and the evidence says another.
DNA profiling reveals clues leading to a killer's identity 20 years later.
In 1991, Grand Junction, Colorado, is on edge after a series of deadly bombings.
A woman is abducted and a month later found dead; a tip leads investigators in the right direction.
Investigators hope tiny paint chips and shards of plastic lead them to a hit-and-run driver.
A unique murder weapon and blatant clues lead the police straight to the careless killer.
Detectives discover new clues left by a stalker's letter to his victim.
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