Reconstructing the investigation into the murder of a man at an Ohio gas station. The case quickly revealed a web of secrets and lies connected to one of the community's richest families.

A former police officer comes home to find is whole family murdered; forensic evidence points to the former officer as a suspect despite his alibi.

Horror stocks a sleepy Welsh village, when a woman is butchered in Cold Blood. The grizzly evidence suggests a ritual sacrifice. Rumors and legends scatter police in all directions. Can forensic science reveal the madman behind the slaughter?

In 1995, 21 years after Cheryl Miller's murder, police reopen the case based on changing witness testimony.

A docudrama on the investigation of the rape and murder of a young university student, Sarah Whitehead, in a small northern community in the Canadian province of Ontario.

On New Year's Eve 1991, 45-year-old Catherine Carroll is stabbed 53 times and dies on the bathroom floor. Her 19-year-old son, Greg Parsons, discovers the grizzly scene and charged with murder. Neighbors testify that his mother was terrified of him. And when police uncover a song by his band called 'Kill Your Parents', Greg is eventually sentenced to life in prison. When DNA evidence finally exonerates him years later, police try to revive the stone cold case.

A sleepy Pennsylvania town is rocked when a popular dentist is discovered lying in a pool of blood. Police uncover few clues but plenty of rumors. Was the motive money or passion? And can the police be relied upon to investigate one of their own?

Parceled into a series of plastic bags, the dismembered body Karyn Slover is found floating in an Illinois lake. An autopsy reveals she also suffered multiple gunshot wounds to the head. After 2 years and no leads, can forensic science crack the case?

A serial killer is on the loose in the college town of Gainesville, Florida. And although police close in on their prime suspect, they fail to establish a forensic link and the case goes cold. But can they find the culprit before he strikes again?

Spring Hill, Florida, is rocked by a series of violent crimes. All signs point to a serial killer with a taste for elderly women and fire, but police and the FBI find little evidence to solve the case. Can investigators track down the culprit?

An international media sensation erupts when a British exchange student is brutally murdered in the Italian university town of Perugia. With her throat slashed, Meredith Kercher's half-naked body is found in her locked bedroom. And, with the case making headlines around the world, police are under tremendous pressure to find a culprit fast.

In Michigan, a 15-year-old is abducted and strangled, her naked body dumped in a nearby orchard. Police line up a slew of suspects, but the case goes cold. But ten years later, a grand jury dusts off the case, and finds the truth has been there all along.

A pretty Brooklyn college student disappears after a night out, and police are convinced she's been abducted. Two days later, her remains are found in an empty home. Police assemble a list of possible culprits, including an ex boyfriend named Pyscho.

Near Chicago, seven fast food workers are gunned down and their bodies left in the restaurant's walk-in freezer. With the community's residents reeling, and the media clamoring for answers, police struggle to piece together the deadly puzzle.

When the body of a San Diego man is found in his burned car, investigators begin a bizarre murder mystery. Many people are possible suspects, but the case goes cold. A woman makes a confession, and a tale of jealousy and cold-blooded murder is revealed.

Just outside Memphis, an affluent Tennessee community is stunned when, in the early morning hours, a gentle, much-loved McDonalds manager is brutally attacked and left for dead on the floor of the restaurant. In critical condition, she's rushed to the hospital where she dies soon after.

An investigation into a 23-year-old Hawaiian tourist's rape and murder reveals a world of drugs and deception few vacationers ever see. And it's up to one lone detective to get the victims family some justice

South California is the perfect place to retire, but when an 84-year-old is brutally raped and murdered in her senior living community everyone is a suspect. To find her killer, the investigation goes global as the suspect does his best to slip away.

An 18-year-old runaway is found raped and strangled to death on the side of a San Diego road. Tracking down the cold-blooded killer will take years of detective work and a benign connection.

In Colorado, a lifelong bad boy comes home to finds his wife, savagely raped and strangled to death. Evidence indicates the attack is personal. But is the husband is trying to get away with murder or could someone else be involved?

Murdock Nebraska, a man returns home to find his mother and father shot to death. Nothing of value is missing. Everyone in town is stunned by the news and they begin to wonder, is the killer someone they know?

Minneapolis, Minnesota is a haven for its large gay community, until gunfire rips through the city leaving two men dead. An eyewitness leads investigators to a suspect, but soon after, an anonymous letter points to an anti-gay hate group on a mission.

Miami's Coconut Grove rarely sees trouble. Until Jos? Calvo, a family man, is shot in the head and robbed of his Rolex watch. What appears to be a random cash grab turns into a sinister mystery. Is this a robbery gone bad or a murder for hire?

Aiken, South Carolina, is a tiny peaceful town where nothing much happens. Until Jessica Carpenter, 17, is found raped and murdered in her living room. The neighborhood goes on high alert while police swing into action to catch her killer.

Austin is famous for its music scene and party spirit--until a single mother is savagely beaten in her sleep. With no leads, and a culture that distrust authority, 21 years pass before investigators get a stunning phone call that turns the case red-hot.

In one of the most notorious missing children cases, Adam Walsh, 6, steps into a stranger's car and disappears. A manhunt is launched but Adam's severed head is found two weeks later. More than a quarter of century passes before the mystery is solved.

A horrendous miscarriage of justice made all the more famous by the book The Innocent Man - Murder & Injustice in a Small Town by John Grisham. In Ada Oklahoma, 21-year-old Debbie Sue Carter is found raped, beaten and strangled in her apartment. A quest for justice thrusts Ada into the national spotlight and leaves a family wondering for a quarter of a century - who killed Debbie Carter?

Winston-Salem in 1982 is a city divided by race. And when a young white copy editor is raped and stabbed to death blocks from where she worked, the atmosphere is tense. Twenty years pass before Deborah Sykes' killer finally faces justice once and for all.

Shock waves ripple throughout Clearwater, Florida, when an attractive waitress is found on her bedroom floor stabbed 16 times. As years pass and the case goes cold, police fear DNA might not even find justice for Laurie Colannino.

A budding college football player's life is cut short when his 21st birthday party ends with his brutal murder. A gun shot to the head with a bullet wound so exact that Lexington police think it looks like a hit. But who would want to kill Trent Digiuro?

When Jim Webb, Co-Owner and Head Chef of the General Wayne Inn outside of Philadelphia, is found shot to death in his office, police hatch a plan so risky it could mean letting a killer run free forever.

A murderous attack in Park Slope, Brooklyn, leaves Sylvia Lugo dead and her girlfriend, Amanda Leach, raped and shot in the leg. Police struggle to pin down an assailant without any hard evidence, resulting in Leach being pegged as the prime suspect.

When Wharton business student Shannon Schieber is found raped and strangled to death in her Philadelphia apartment, the city errupts with outrage as it's discovered that Shannon's death is the the latest in a string of rapes in the Centre City area.

A McDonalds restaurant manager is murdered in a small Tennessee town and the police force goes into overdrive. But with a big list of suspects investigators are baffled and the case goes cold. Two years later, a tip brings them to Delma Ramsey's killers.

Palo Alto's community sympathize with wealthy property developer Ken Fitzhugh when his wife of more than 30 years, Kristine, falls to her death down the basement stairs. But police are suspicious from the get go: there is just too much blood at the scene.

Winston-Salem in 1982 is a city divided by race. And when a young white copy editor is raped and stabbed to death blocks from where she worked, the atmosphere is tense. Twenty years pass before Deborah Sykes' killer finally faces justice once and for all.

Shock waves ripple throughout Clearwater, Florida, when an attractive waitress is found on her bedroom floor stabbed 16 times. As years pass and the case goes cold, police fear DNA might not even find justice for Laura Colannino.

A budding college football player's life is cut short when his 21st birthday party ends with his brutal murder. A gun shot to the head with a bullet wound so exact that Lexington police think it looks like a hit. But who would want to kill Trent Digiuro?

When Jim Webb, Co-Owner and Head Chef of the General Wayne Inn outside of Philadelphia, is found shot to death in his office, police hatch a plan so risky it could mean letting a killer run free forever.

A murderous attack in Park Slope, Brooklyn, leaves Sylvia Lugo dead and her girlfriend, Amanda Leach, raped and shot in the leg. Police struggle to pin down an assailant without any hard evidence, resulting in Leach being pegged as the prime suspect.

When Wharton business student Shannon Schieber is found raped and strangled to death in her Philadelphia apartment, the city errupts with outrage as it's discovered that Shannon's death is the the latest in a string of rapes in the Centre City area.

When Rachel Kosub is discovered naked, brutally raped, and strangled to death on her office floor, San Antonio police question who could commit such a vicious murder. They struggle to identify a killer until DNA analysis cracks the case, 20 years later.

A McDonalds restaurant manager is murdered in a small Tennessee town and the police force goes into overdrive. But with a big list of suspects investigators are baffled and the case goes cold. Two years later, a tip brings them to Delma Ramsey's killers.

Palo Alto's community sympathize with wealthy property developer Ken Fitzhugh when his wife of more than 30 years, Kristine, falls to her death down the basement stairs. But police are suspicious from the get go: there is just too much blood at the scene.