WATCH ONLINE, MOBILE, FREEVIEW 64, SKY 164, SKY GLASS / SKY STREAM 168, FREESAT 162 AND VIRGIN 199
Perfect Family: A family are found murdered in their home. Only their 20-year-old daughter has survived. Investigators wonder who would kill this seemingly perfect family. (S3, ep 1)
Left For Dead: In 1997, Henry Caneva was found dead after he and his wife were attacked in their home. With little to no evidence, how did investigators nab his killer? (S3, ep 2)
Innocent Bystander: When a drug dealer and his girlfriend are found murdered in their apartment, a bloody print leads investigators to a killer who defies belief. (S3, ep 3)
Murder On Miguel Lane: When three teenage friends were found murdered in Arlington in 1985, a thorough forensic investigation turned up a highly unlikely culprit. (S3, ep 4)
Monstrous Act: A look at the surprising twists in the hunt for the killer of 20-year-old Missy Grubaugh, who was found dead in her apartment in Arlington in 1994. (S3, ep 5)
Clairemont Killer: Documentary exploring the huge manhunt for the serial killer who murdered six women in frenzied knife attacks in San Diego in 1990. (S3, ep 6)
Murderous Intentions: A day after Katrina hit the Gulf Coast, a man was shot by opportunistic masked burglars. It was a tricky case that took police three years to solve. (S3, ep 7)
Death Of An Angel: In 1992, 17-year-old Angel Ormston failed to return from a trip to the shops. Had she run away? Five months later, her family discovered the awful truth. (S3, ep 8)
Elemental Murder: State-wide panic ensues when a waitress is poisoned in Florida. One of the strangest sting operations in the state's history turns up an unlikely killer. (S3, ep 9)
Hotel Homicides: In the 1990s, three woman were killed in three Iowa hotels. In the infancy of forensic testing, how did detectives bring their sadistic murderer to justice? (S3, ep 10)
Deadly Denial. When a gun advocate is murdered in her home, detectives suspect the victim knew her attacker. Can forensic evidence point them to the killer? (S3, ep 11)
Random Acts Of Madness: Years after a father is shot after a night of revelry, an unrelated cold case and a person's guilty conscience finally brings his killer to justice. (S3, ep 12)
The Bathtub Killer: A look at the tense search for Bathtub Killer Dale Devon Scheanette, who was executed in 2009 for murdering two women in Arlington, Texas. (S3, ep 13)
Pure Evil: When the naked body of a Chicago woman is found dumped on a Wisconsin highway, investigators suspect she may be the victim of a lovers' spat which turned deadly. (S4, ep 1)
The Perfect Suspect: Detectives investigate the mysterious death of a Chicago woman whose body was found dumped on a Wisconsin highway in 1995. (S4, ep 2)
Blood Trail: A tiny clue leads investigators to the unlikely man behind the murder of 22-year-old Theresa Wesolowski, who was found stabbed 46 times in Germantown in 1999. (S4, ep 3)
Wolf in Sheep's Clothing: Detectives uncover the shocking truth behind the disappearance of an eight-year-old girl who was abducted close to her home in California. (S4, ep 4)
Mother's Day Murders: When a military wife and her two girls are found dead, police uncover many suspects, including a babysitter and an eyewitness who can't be trusted. (S5, ep 5)
Gruesome Discovery: Police investigate the real-life case of a woman whose body was found in a rubbish bin. Could she have been the victim of a co-worker's violent obsession? (S4, ep 6)
A Bike Ride To Murder: When the brutalised body of a San Diego girl was found in a canyon in 1991, detectives unearthed a shocking truth that no one could believe. (S4, ep 7)
Murder On The Menu: Detectives grill a host of suspects when they discover the dumped and dismembered body of a chef. Can forensics confirm his unlikely killer? (S4, ep 8)
Triple Threat: When a California mother-of-two is found strangled in her home, detectives question whether she was the latest victim of a fledgling serial killer. (S4, ep 9)
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? (S4, ep 10)
City Under Siege: Detectives in Arizona investigate whether a 20-year-old woman could be the latest victim of an unstoppable gunman's shooting spree. (S4, ep 11)
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. (S4, ep 12)
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? (S4, ep 13)
Deadly Forest: The tragic story of 17-year-old Michele Avila, who was murdered by two school friends in the Angeles National Forest in 1985. (S5, ep 1)
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. (S5, ep 2)
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. (S5, ep 3)
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? (S5, ep 4)
Burning Fury: In 1988, Robert Haugen was found murdered in his apartment. Two decades later, a surprising culprit with a sadistic dark side is brought to justice. (S5, ep 5)
Phantom Predator: A look at how detectives uncovered the shocking identity of the South Side rapist, a man who terrorised the women of Missouri for over six years. (S5, ep 6)
Deathbed: Three decades after a man is found dead in mysterious circumstances in San Diego, forensic advances finally identify his highly unlikely killer. (S5, ep 7)
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? (S5, ep 8)
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. (S5, ep 9)
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. (S5, ep 10)
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. (S5, ep 11)
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. (S5, ep 12)
Last Resort: A shocking culprit is revealed when police investigate a fatal acid attack on a Florida hotel manager. (S5, ep 12)
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. (S6, ep 1)
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. (S6, ep 2)
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? (S6, ep 3)
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. (S6, ep 4)
High School Homicide: In 1989, Indianapolis high school student Amy Weidner was brutally killed while she stayed home from school. But who would want her dead? (S6, ep 5)
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. (S6, ep 6)
Stone Cold Killer: In 2000, near Anchorage, Alaska, Genevieve Tetpon was found dead from a brutal attack. It wasn't until 2009 police finally made a breakthrough. (S6, ep 7)
Brute Force: In 1987, Kentucky police discovered the body of 20-year-old Corinna Mullen in the boot of her car. But it would be many years before the case could be solved. (S6, ep 8)
Blood In The Water: In 1980, a teenage girl was brutally murdered in her Colorado home. But in her last moments, she managed to leave investigators a clue to her attacker. (S6, ep 9)
Sinister Secret: In rural Wyoming, a young teen is found strangled after vanishing from her group home. Relentless investigation reveals the killer's shocking identity. (S6, ep 10)
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. (S6, ep 11)
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. (S6, ep 12)
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? (S6, ep 13)
Murder in the Mirror: The crime documentary series returns with a look at the brutal 2006 murder of 80-year-old grandmother Bernita 'Billie' Cunningham. (S7, ep 1)
Deadly Accusation: When Virginia Beach detectives were called to the scene of a bloody double homicide in May 1996, they uncovered a murder plot too strange to believe. (S7, ep 2)
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. (S7, ep 3)
Last Dance: A look at how Virginia detectives used science and cunning to catch the killer of 16-year-old ballet dancer Meghan Landowski in 2008. (S7, ep 4)
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? (S7, ep 5)
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. (S7, ep 6)
No Good Deed: In 2005, a 28-year-old photographer and college student was found murdered in his Texas apartment. What could have led a killer to his door? (S7, ep 7)
Absent Teacher: In 1993, a primary school teacher went missing after her first day at a new job. Over the next two months, investigators pieced together the sinister puzzle. (S7, ep 8)
Left Alone: When 13-year-old Mollie Pittman is attacked and murdered in her friend's Orlando home, investigators are left with absolutely no clues to the killer's identity. (S7, ep 9)
Flames In Paradise: Detectives encounter a rogue's gallery of suspects and outlandish leads on their way to finding the killer of telemarketing manager David Stevens. (S7, ep 10)
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. (S7, ep 11)
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. (S7, ep 12)
Barefoot Homicide: Philadelphia investigators bring to light the obsession that drove a killer to strangle maths student Deborah Wilson to death in a computer laboratory. (S7, ep 13)
Series exploring some of the most baffling and challenging investigations in modern law enforcement. (S8, ep 1)
Series exploring some of the most baffling and challenging investigations in modern law enforcement. (S8, ep 2)
Series exploring some of the most baffling and challenging investigations in modern law enforcement. (S8, ep 3)
Series exploring some of the most baffling and challenging investigations in modern law enforcement. (S8, ep 4)
Series exploring some of the most baffling and challenging investigations in modern law enforcement. (S8, ep 5)
Series exploring some of the most baffling and challenging investigations in modern law enforcement. (S8, ep 6)
Last Curtain Call: When a former actor is gunned down in Yuma, Arizona, police chase leads across the southwest until they finally get their man. (S8, ep 7)
Silent Night: When a young woman is found murdered in her Oregon apartment on Christmas Day, investigators soon learn the terrifying truth about her killer. (S8, ep 8)
Murder Down Memory Lane: When a five-year-old describes her mother's killer as a "ninja", police set out to put the surprising killer behind bars. (S8, ep 9)
End of the Line: When a first-year college student is raped and murdered, it takes a rookie cop to beat the odds and catch a killer. (S8, ep 10)
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. (S8, ep 11)
Cold Fusion: Cops go on the hunt for a killer when the leading advocate for the controversial science of cold fusion is beaten to death. (S8, ep 12)
Final Lesson: The killer of a Santa Monica art teacher remains at large for years as police use every trick in their arsenal to finally hunt him down. (S8, ep 13)