Serial killer Edmund Kemper killed six women in California and several members of his family.
Exhibiting cruelty, callousness, and viciousness beyond any human understanding, Richard Ramirez terrorized Los Angeles with his spate of home invasions.
The story of the "Death House Landlady", who took in elderly and disabled tenants, only to murder them for their social security paychecks
The chilling case of a Hong Kong kleptomaniac and a Vietnam veteran who committed a series of horrific murders from their cabin in California.
Also known as the Yosemite Park Killer, Cary Stayner murdered four women in 1999 before his capture. Were his actions the result of a tragic childhood?
Examining the murderer who appeared on a dating game show in the midst of a killing spree that may have claimed as many as 130 victims.
The disturbing case of 53-year-old German Horst Kroener, who was jailed in 2016 for murdering his Filipina wife in her sleep.
The case of 'The Pink Giant', Wolfgang Schmidt, a transgender German serial killer who brutally murdered five women and an infant.
The story of the Austrian serial killer Jack Unterweger, who was heralded as an example of successful rehabilitation, only for him to kill again.
An examination of the Polish serial killer, who came to be known as "The Scorpion" after murdering nine women and attacking eleven others.
A profile of one of Oregon's most prolific killers, Dayton Leyroy Rogers, who would prowl Molalla's forests in search of prostitutes to satisfy his lust for violence.
A profile of triple-murderer Richard Roszkowski, who killed his ex-girlfriend Holly Flannery, her nine-year-old daughter Kylie and his former room-mate Thomas Gaudet in September 2006.
A profile of serial killer Cesar Barone, currently serving a life sentence for the rape and murder of four women in Oregon in the early 1990s.
The story of one of the most prolific serial killers in Canadian history, dubbed `The Pig Farmer Killer' by the media.
The story of the serial killer Sean Vincent Gillis, who brutally snatched away the lives of eight innocent women during a decade-long killing spree in Louisiana.
The story of a terrifying killer who snatched away the lives of four victims before being caught while trying to claim his fifth.
The story of Judy Buenoano, the first woman in Florida to die in the electric chair. She was a killer so evil that her own son became one of her victims.
Serial killer Gary Ray Bowles, who took the lives of six men in 1994, and became known as the I-95 Killer, as most of his victims lived close to the Interstate 95 highway
A profile of Derrick Todd Lee, who murdered seven women in the Baton Rouge area of Louisiana, and was sentenced to death for his chilling crimes
The story of Velma Barfield, the first woman to be executed by lethal injection after taking six lives.
The story of the cold-blooded serial killer who took the lives of at least fifteen people during a terrifying decade-long murder campaign.
The chilling story of the serial killer who worked as a nurse in Texas, where she killed many children and infants by injecting them with drugs
The notorious story of a man convicted of the murder of two young girls, as well as another killing at a military base.
The Alaska serial killer Robert Hansen, who murdered at least 17 women during a spree that lasted for more than a decade.
A killer who goaded police and media during his spree, Heriberto Seda claimed to kill based on his victims' star signs.
A career criminal who was convicted of one murder and suspected of two others, Charles Albright was notorious for keeping eyes as trophies
Responsible for five murders, Joshua Wade avoided justice for years and later confessed to killings that started from when he was just 14.
After being arrested for a different crime, Anthony Allen Shore was matched up to four murders making him the Tourniquet Killer
The crimes of Mark Goudeau, an American abductor, robber, serial rapist and later serial killer who was active in Arizona from 2005 to 2006
A killer who found some of his victims through ads, the case of Paul Runge became prominent in the debate over the death penalty in Illinois
A serial killer and rapist who murdered at least 23 men and boys, this is the little-known case of Ronald Dominique, known as the Bayou Strangler
The story of The Weepy Voiced Killer - Paul Michael Stephani who would famously whimper confessions over the phone after each of his murders
Mother Paige Birgfeld went missing in 2007 and her remains were found five years later. A decade on, police closed the net on a local mechanic.
In 1973, Dawn Magyar's body was found two months after she had vanished. Twenty-eight years on, advances in forensics helped solve the case.
In 1999 and 2000, John Eric Armstrong prowled Detroit looking for sex workers. A seemingly normal father, no one suspected he was a killer.
Over a 25-year career of murder, Richard Biegenwald killed at least six people as he sought our ever more violent and inventive ways of dealing death.
For Richard Kuklinski, crime was his way of life. As a professional murderer, his unusual methods led to a disturbing nickname, The Iceman.
When police in Colorado interrogated Richard Paul White about the murder of his friend, he began confessing to even more horrifying crimes.
Billy Mansfield Jr murdered at least five victims, but investigators suspect the extent of his serial killing is still to be revealed.
As well as being a well-spoken, well-respected computer expert, Randy Kraft was a serial killer suspected of killing more than 60 victims.
Working as a truck driver, serial killer Wayne Adam Ford strangled and dismembered his victims before dumping their bodies in creeks.
After Jarrae Estepp's body was found at a recycling centre, police discovered that her murderer, Steven Dean Gordon, had killed before.
A profile of serial killer Donald Henry Gaskins who stabbed, shot, drowned and poisoned more than a dozen people in South Carolina in the 1970s
From 1979 to 1981, at least 28 children and youths were murdered after vanishing from predominantly Black neighborhoods of Atlanta, sparking terror in the community.
An in-depth look at the case of David Marmolejo, who was convicted of the brutal murder of his own mother in 2009.
In the 1990s, Bridgeport was a violent place. So when several woman were found murdered, the deaths were never linked. A decade later, a cold case team made a startling connection.
Westley Allan Dodd exterior concealed a man with sadistic urges. By the age of 28, he was responsible taking the lives of three young boys.
In 1993, police officers pulled over a young man for erratic driving. Within the car, they found the body of a murdered woman.
To some, nurse Charles Cullen was a friendly face, always willing to lend a hand. None suspected what he really was: a relentless and ruthless killer.