Forensic scientists work with the only clue recovered from a multiple-victim shooting: a 12-gauge shotgun. Scientists use unique methods to lift the serial number from the weapon to trace it to its owner.
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In an affluent suburb of Philadelphia, police were called to the scene of what appeared to be an accidental drowning. The investigation gradually focused on one person, a suspect who had more than a million reasons to want the victim dead.
A college student was found dead, and the evidence suggested he knew his killer. Three hairs and some microscopic cells helped police unravel a web of lies and find the motive for murder.
A car carrying three men pulls up alongside another on an Alaskan highway and fires shots, leaving a passenger dead. One of the passengers in the killer's car agrees to testify against his friends. The resulting trials don't end the carnage.
An employee of a dry cleaner was raped and murdered in the store.
A brilliant young architect became ill and died just before she was to testify in a criminal trial.
A brilliant young architect became ill and died just before she was to testify in a criminal trial. The autopsy revealed she'd been poisoned with arsenic. Investigators had to determine which person who knew her had a motive for murder.
A Native American woman was brutally killed in the desert of New Mexico, and the crime scene was rich in forensic evidence: tire tracks, shoe impressions, and even the murder weapons.
Emergency dispatch received a call from a man who said his girlfriend shot and killed herself. The autopsy revealed that the gunshot wound was not self-inflicted, and the evidence on her body would give police a golden opportunity to catch killer.
When police recovered the submerged car of a man reported missing, they expected to find his body. But it wasn't there. The investigation that followed would uncover an obsession turned deadly and the motive for murder.
A Modesto, California, teenager went missing. There was no sign of a struggle in her home, and police suspected she'd simply run away until her naked, bruised body was discovered in a ditch 20 miles away.
An obstetrician returned home from the hospital and found his wife on the bathroom floor. She was covered with blood and not breathing. He tried unsuccessfully to revive her, staining his clothes with her blood in the process, and then he called 911.
The decomposed body of a young woman was discovered in a Bakersfield irrigation canal.
Highway policeman is shocked when a bloody traffic collision is classified as an accident.
Further investigation proves that a woman's suffocation after falling asleep was staged.
Pieces of plastic the size of sand hold clues to a bombing.
Investigators reassemble a 5-1/4 computer disk cut to pieces with pinking shears to find murderer.
A mother's suicide is not convincing when an attempt on her life three years prior is discovered.
A wife is missing in Key West; investigators wonder if they should be searching for a killer.
Forensic artist must reconstruct a victim's face before she can be identified.
Twenty years after the murder of a young mother technology sheds a new light.
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