Kill Now, Pay Later: When an arrest is made in the contract killing of a California businessman, police discover that's just the beginning of the story.
Vicious Voyeur: While her roommates were away, 23-year-old Stephanie Bennett was raped and strangled in her apartment. It took years, but finally the sadistic killer is revealed.
Housebound Homicide: Police take ten years to track down the killer of a disabled Denver woman. Was she murdered for her money or was there a more personal motive?
Little Girl Gone: The 1988 case of a missing nine-year-old girl went cold until an encounter at a bus stop breathed new life into the investigation and revealed the truth.
Nightmare Field: Investigators search for 23-year-old Dalene Carlson after she is reported missing. But then a tractor operator makes a gruesome discovery in a cornfield.
Flames in Paradise: In California, a telemarketing manager's charred body is found in his car, and detectives encounter a rogue's gallery of suspects while looking for his killer.
Left Alone: There is no sign of a break-in when a 13-year-old girl is attacked and murdered in the home of family friends. It takes 17 years to find out if she knew her killer.
Absent Teacher: An elementary school teacher goes missing after her first day at a new job, and investigators sift through clues to uncover the truth behind her disappearance.
No Good Deed: In 2005, a 28-year-old photographer and college student was found murdered in his Arlington, Texas, apartment. What could have led a killer to his door?
Eye for Murder: In December 1990, 21-year-old wife and mother Dina Kichler was found murdered in her Florida home. Investigators had to race to track down her killer.
Deadly Desire: Days before Thanksgiving, a small Philadelphia suburb is rocked by the murder of 67-year-old Alice Hufnagle. Who could commit such a random crime?
Death and Taxes: A look at how police solved the murder of 58-year-old tax attorney Ashley Pollow, who was strangled and burned at his Florida home in December 2010.
Deadly Accusation: When Virginia Beach detectives were called to the scene of a bloody double murder in May 1996, they uncovered a murder plot too strange to believed.
Murder in the Mirror: When a beloved matriarch is found murdered, her friends and neighbours come under suspicion as detectives investigate the small town's first homicide.
Death Comes Calling: Beloved grandparents are found murdered in their home in Oregon. Are they victims of a spree killer, or was their murder carefully plotted?
Nightclub Nightmare: When a robbery at a popular Texas nightclub leaves one dead and two critically wounded, investigators are in a race against time to catch the killer.
Dead End Trail: Fear grips the students of Southern Illinois University when the body of senior Susan Schumake is discovered near a popular campus trail.
Sinister Secret: In rural Wyoming, a young teen is found strangled after vanishing from her group home. A relentless investigation reveals the killer's shocking identity.
Stone Cold Killer: In 2000, near Anchorage, Alaska, Genevieve Tetpon was found dead from a brutal attack. It wasn't until 2009 that police finally made a breakthrough.
Hometown Homicide: On 17 January 1980, in the town of Hemet, California, 67-year-old Elizabeth Crossman was murdered in her home. But it took 33 years to convict her killer.
Murder in Room 348: When business traveller Greg Fleniken is found dead in his hotel room, all signs point to a heart attack. But police soon realise he has been murdered.
Death of Innocence: Kenny Conrick was just eight years old when he was abducted and murdered in Gary, Indiana in 1979. Who would want this innocent child dead?
Vanished in Reno: When a young university student is abducted from a friend's home in the middle of the night, the city of Reno, Nevada lives in fear of who might be next.
Wicked Impulse: In 1997, a California mountain town is stunned by the murder of a longtime resident. Months of dogged investigation bring the case to a shocking conclusion.
When Evil Strikes: Detectives race to solve the murder of North Carolina factory worker Jonathan Blackwell, whose body was found two years after he disappeared in 2004.
Little Boy Lost: When the body of 11-year-old Christopher Alan Brown was found in the Flint River in 1985, it took almost 20 years for evidence of his murder to be found.
Dangerous Fortune: Police are baffled when the bodies of fortuneteller Ha Jade Smith and her daughter Anita Vo are found with white paint covering their head and hands.
Sin City Slaying: When 52-year-old Martha Doney was found dead in her Las Vegas home, police struggled for many years before bringing the case to a surprising conclusion.
Manufacturing Murder: In December of 1997, the bodies of three men and a woman were discovered in a Florida manufacturing plant. Who killed them and why?
Deathbed: In 1972, a postal worker is found brutally murdered in his San Diego apartment. Thirty seven years later, old evidence points investigators to the killer.
Phantom Predator: Years after a serial rapist targets St. Louis in the 1990s, a concerned citizen helps investigators bring an unlikely culprit to justice.
Burning Fury: When a 29-year-old man is found tortured and murdered in his burned-out apartment, it will take two decades before investigators unmask the sadistic killer.
Driven to Murder: Detectives encounter a huge cast of shady characters as they investigate the execution of a millionaire. Could his murder have been a professional hit?
Deacon's Demise: The notorious 'South Side Rapist' terrorised St Louis in the early '90s, but it took several years before the police were led to an unlikely culprit.
Christmas Mourning: In 1988, Beverly Eller was found murdered in her home. Years went by before a piece of evidence surfaced that tied an unlikely suspect to the crime.
Maritime Murder: Investigators scrutinise a ship full of suspects when a naval officer is poisoned at sea. Which of the many theories surrounding his death is true?
No Mercy: When a mother of triplets is found dead in her Washington home, detectives piece together her final moments to reveal the surprising identity of her killer.
Killings in Kentucky: A respected vet, his wife and son are viciously gunned down in their home. Can detectives unearth the bitter truth behind this tragic crime?