A young single mother is abducted from a gas station and later found stabbed to death near an oil field.  Detectives use shoe and tire impressions to weed out numerous suspects to find their killer.

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When a 79-year-old woman is found shot to death in her own home, investigators initially suspect her long-time husband and a violent neighbor with a penchant for threats.  But shell casings recovered at the scene and a high-tech database reveal the killer to be the last person anyone suspected.

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A 24-year-old old criminology student who left a SoHo bar intoxicated is found raped, murdered handcuffed, gagged, and wrapped in a blanket alongside a desolate road in East New York, Brooklyn. Police investigate everyone at the bar to find the killer.

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An extremely successful California career woman keeps falling ill and doctors can’t determine why. When she dies, they still have no explanation, until they find a key figure in her life who has been lying about his past.

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A Texas ex-con resolves to live a clean life after his release from prison. When he’s later arrested and convicted for a bloody murder, he insists he’s innocent. From behind bars, he’s determined to use forensic science to prove his case.

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Three Indiana construction workers are found shot dead at a work site. Detectives find few suspects, but have one key clue: one of the killers stepped in dog feces during the murders. If detectives can find his shoes, they’ve got their man.

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A young Texas teenager and her boyfriend are brutally attacked on Valentine’s Day. She is found dead while her boyfriend escapes. The case goes cold for nearly 50 years before a new forensic test exposes a family man with a dark secret.

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An Illinois mother and her two young children are brutally murdered in their beds. Lurid threats are spray painted all over the walls of the crime scene. Detectives discover death threats sent to the family, exposing an unlikely killer.

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Someone targets members of law enforcement in a peaceful Texas county. Numerous suspects emerge and murders continue as detectives race against time. Finally, a single bullet casing uncovers the bizarre reason the killer wanted revenge.

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When a beautiful college student is stabbed to death in her Knoxville apartment, suspicion immediately falls on her roommate. A bloody shoe print left by the killer exposes a murderer with no history of violence and no reason to kill.

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A massive explosion claims the life of a California farmhand. Authorities think it’s an accidental death, but analysis of debris shows it’s a bomb. Investigators have few suspects until they hear ominous rumors about a jealous rage.

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A hearing impaired 77-year-old on a road trip is attacked by a thief and shot to death. Why? Because the man cannot hear his assailant’s demands. Random murders are among the hardest crimes to solve but investigators are determined to bring this killer or killers to justice. Can advances in ballistics testing crack the case?  

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On a brutally cold winter night in 1984, a young woman is found viciously murdered on the side of a rural Wisconsin driveway. The victim, Traci Hammerberg, had been out with friends for a night of drinking and partying. What happened? Detectives initially have plenty of suspects, but the investigation would remain unsolved. Until nearly three decades later, when forensics from an unrelated crime helps breaks the case.

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An early morning house fire kills the only doctor in the small town of Iaeger, West Virginia. Who - or what - could have led to this? An arson investigation quickly leads to the arrest of Jason Lively, the son of the doctor’s long-time nurse. But when Jason’s alleged accomplice walks free, the prosecutor is worried this might have been a miscarriage of justice.  

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He is a criminally charged sex offender and a murderer who attacks in a terrifying rage. This predator manages to evade capture for years, but he leaves a critical piece of evidence behind – his palm print. Detectives are determined to do whatever it takes to put a name and a face to the print.

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In 1990, three sex workers are brutally murdered and left along the banks of the Spokane river. A serial killer was on the loose—and detectives had few clues. Animal hairs, fibers and a fingerprint were found, but for years the perp was never identified. More than 20 years later there’s a break in the case - and an arrest is finally made, but no one could have ever imagined who was behind this sinister crime.

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A deeply religious librarian, wife and mother named Gail Fulton is shot execution style in the quiet suburbs of Michigan. Surveillance video reveals it was trio of killers that took her down. Is there more to Fulton’s background? Eventually, detectives get a break: a handwritten note. But will it provide enough clues to catch the mastermind behind this horrific killing?

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A mortally wounded woman crawls to call 911. Her husband who wants a divorce she will not give him gets a hard look from police. But he says he has an airtight alibi for the exact time of the murder. The intricate forensic science of ballistics is brought to bear to and draws a direct connection to an unexpected conclusion.  

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A murder victim’s final moments are caught on tape. The crime scene looks like a clear robbery-murder. Text evidence at first points to a jilted lover, but will his alibi check out? Now police identify a second suspect with a possible motive of deadly revenge. Forensic technology and DNA evidence combine in an attempt to make the case.  

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A building manager finds the violated and lifeless body of a young woman in the bathtub of her first apartment. When questioned, an ex-con living downstairs lies to police. But the lies alone do not prove murder and the case goes cold. Then a new forensic tool examines the old evidence. Will science point to a hidden suspect and crack the case?  

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In 1982, 37-year-old Navy lieutenant Lee Hartley is murdered while deployed out to sea. Cause of death? Arsenic poisoning. Investigators discover Lee had more than his fair share of enemies aboard the ship. But it takes years before investigators discover what really happened to Lee and who, ultimately, was behind this brutal murder.

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A 20-year-old woman sets out on her bike and never returns. Her body found just a few miles from her house in Snohomish County, Washington, with a gunshot wound to the head. Who would do such a thing? Years go by without any hard evidence or leads, until a new generation of investigators and modern technology breaks the case and finally puts a face to the killer.

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A single mom looking for love vanishes without a trace. Foul play is tragically confirmed when a large pickup truck toolbox opens to her body stuffed inside. Homicide detectives investigate men she matched on dating sites, another man she met at work, and finally, a lover with a secret and violent past. Can forensic evidence connect the dots and lead to justice under the law?

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51-year-old father and teacher Bill Sparkman is found hanging naked from a tree with the letters “FED” scrawled on his chest. With barely any evidence to work with, investigators turn to these letters for answers… which leads to a surprising conclusion that no one saw coming.

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The mysterious murder of young teacher’s aide leaves a hole in the heart of her small community in Agawam, Massachusetts. As the rumor-mill about suspects churned, the actual perp slipped further away. But generations of investigators and a scientific breakthrough leads to a shocking end to a tragic case.

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After a young mom is found brutally murdered in her home, investigators find startling clues on her cell phone that could lead to her killer.

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An insurance agent is shot execution style in his office in broad daylight but the killer left no fingerprints and there was no murder weapon found at the scene...then investigators discover a critical clue invisible to the naked eye that cracks the case.

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A healthy, young mother mysteriously dies after a minor traffic accident triggering an investigation to find out what caused her death.

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A gruesome discovery in a small town church sends investigators on a search for a killer.

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When a popular handyman in a New Hampshire town is found murdered investigators follow forensic clues to a shocking conclusion.

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After the brutal slaying of a young couple on a road trip, the victims’ families begin receiving disturbing letters.

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The sudden and mysterious death of a health conscious woman triggers an investigation into what killed her.  

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A young mother is murdered in a crowded parking lot in broad daylight.

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A suitcase leads to the gruesome discovery of a nearly perfect crime. 

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A mysterious murder in an upscale community is solved by cell phone forensics.

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A serial killer terrorizes a small Texas town.

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When a Yale student mysteriously vanishes days before her wedding investigators comb a secure research lab for clues.

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An amazing new forensic tool turns a cold case around.

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Investigators search for clues after a body is discovered in a watery grave.

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The naked body of a young woman is discovered in a remote area, leading forensic investigators on a search for clues to her identity and the identity of her killer.  

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A fire leads investigators to re-examine an unusual death.

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