A Philadelphia murder reveals decades of misconduct in the city's criminal justice system and raises questions about whether police caught the right person key insiders in the case speak out for the first time on national television.
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When police are unable to identify a young murder victim, a dogged investigator employs the help of armchair detectives and new DNA technology to find her killer -- and her identity.
Michelle Hadley is exonerated after spending three months in jail for attempted forcible rape of her ex-fiance's wife.
When a pathologist is found murdered in his home, the investigation reveals simmering jealousies and a love triangle.
As a murder victim's sisters dedicate themselves to finding the killer, an unexpected source turns the case upside down.
A group of women helps bring down a smooth talking serial predator turned killer who lured young women with promises of fame and fortune.
During a weekend away, a longtime married couple go on an afternoon hike that ends in tragedy a multitude of evidence makes the mystery hard to untangle.
A deadly high-speed chase in Montana leads "Dateline" on a search through 50 years of history to unravel the mystery of how one man turned into a monster and committed one of the state's most notorious crimes.
Investigators try to determine what caused a house fire that killed the 41-year-old wife of a paramedic.
A college student goes missing in broad daylight from her off-campus job at a softball field investigators receive a mysterious phone call that changes everything.
When the mysterious death of a 23-year-old mother in New Mexico goes unsolved, her family searches for answers.
When a scientist is murdered in his home, detectives try to figure out why his wife and son were left unharmed.
A young art student from Texas is found murdered in her bed with no sign of forced entry, indicating that she knew her killer.
A Philadelphia murder reveals decades of misconduct in the city's criminal justice system and raises questions about whether police caught the right person key insiders in the case speak out for the first time on national television.
A community is left in shock when a Cornell student and star athlete gets caught in the middle of a homicide investigation.
The murders of two young women near a Phoenix canal remain unsolved for over 20 years until a team of cold case detectives take on the case and investigate a man known as the Zombie Hunter.
After New Jersey mother Michelle Lodzinski reports that her 5-year-old son has vanished from a carnival, detectives embark on a decadeslong investigation until a family member identifies a key piece of evidence pointing to a potential suspect.
Two murders in Toronto ignite an investigation that spans four decades breakthroughs in investigative genetic genealogy help crack the case.
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