World's Most Evil Killers

An in-depth look at the case of David Marmolejo, who was convicted of the brutal murder of his own mother in 2009

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.

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.

An in-depth look at the life and crimes of Michael Bruce Ross who was executed in 2005 after murdering eight women across Connecticut and New York.

An in-depth look at the life and crimes of William Devin Howell who was found guilty of the murders of seven different women

Examining the crimes of Glen McCurley, who in 1974 abducted 17-year-old Carla Walker from a bowling alley car park and killed her before leaving her body in a ditch

When police in Colorado interrogated Richard Paul White about the murder of his friend, he began confessing to even more horrifying crimes.

For Richard Kuklinski, crime was his way of life. As a professional murderer, his unusual methods led to a disturbing nickname, The Iceman.

Over a 25-year career of murder, Richard Biegenwald killed at least six people as he sought out ever more violent and inventive ways of dealing death.

In 1999 and 2000, women began disappearing from Detroit's thriving areas of prostitution. No one suspected that John Eric Armstrong, a seemingly normal father was actually a killer.

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.

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.

A Texas serial killer, Anthony Allen Shore was matched to four murders after his arrest for a different crime.

Responsible for five murders, Joshua Wade avoided justice for years and later confessed to killings that started from when he was just 14.

A career criminal who was convicted of one murder and suspected of two others, Charles Albright was notorious for keeping eyes as trophies.

A killer who goaded police and media during his spree, Heriberto Seda claimed to kill based on his victims' star signs.

The Alaska serial killer Robert Hansen who murdered at least seventeen women during a spree that lasted for more than a decade.

The notorious story of a man convicted of the murder of two young girls, as well as another killing at a military base.

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.

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.

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 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 one of the most prolific serial killers in Canadian history, dubbed `The Pig Farmer Killer' by the media.

John Allen and Lee Malvo: The story of the Beltway sniper attacks. John Allen and his teenage accomplice carried out the brutal series of shootings that killed 10.

Sunset Strip Killers: The story of two killers who targeted young girls and sex workers for their own twisted pleasure. Descriptions of sexual violence and child abuse.

The Genesee River Killer: The story of the notorious murderer, whose bloodthirsty murder spree lasted over a decade and claimed over a dozen lives.

The Happy Face Killer: A profile of the serial killer, whose chilling confession letters to the media and prosecutors were signed off with smiley faces.

The Shoe Fetish Killer: The crimes of Jerry Brudos, whose disturbing shoe fetish played a part in the gruesome murders he carried out on four young women.

Freeway Killer: The story of the savage serial killer who took the lives of over 21 victims and left their bodies strewn across freeways in California.

The Grim Sleeper: The story of the brutal Los Angeles serial killer. Nine innocent women and a teenage girl lost their lives at his hands

An investigation into the murderous mother-and-son duo, who killed their elderly landlady in a greed-fuelled ploy.

A profile of the Rhode Island family man and Sunday school teacher, who also turned out to be a cold-blooded triple murderer.

A profile of the murderer known to some as the Riverside Prostitute Killer, who sits on death row after being convicted for the slaying of 12 women.

A profile of The Truck Stop Killer, who targeted hitchhikers and truck stop sex workers in a horrific string of crimes spanning 15 years.

A profile of the serial killer who found himself at the center of New York's biggest manhunt after a vicious shooting spree that left six dead.

A chilling profile of the serial killer Todd Christopher Kohlhepp, who claimed the lives of at least seven innocent people between 2003 and 2016.

A look at the cold-hearted criminal who was convicted of murdering her daughter and attempting to kill her two other children in 1983

The crimes of the American serial killer Dennis Rader, who murdered 10 people in the Wichita, Kansas area over 17 years and dubbed himself BTK - meaning `Bind, Torture, Kill'.

The case of serial killer Gary Ridgway, who has confessed to murdering a staggering 71 teenage girls and women across Washington state through the 1980s and 1990s.

The crimes of serial killer Bobby Joe Long, who abducted and murdered at least 10 women in 1984. He was executed by lethal injection in 2019.

A look at the life and crimes of the serial killer Aileen Wuornos, whose story was featured in the Oscar-winning film Monster, and who was executed in 2002.

A look at the life - and horrifying crimes - of Ted Bundy, a notorious serial killer who murdered at least 30 young women and girls between 1974 and 1978.

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.

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?

The chilling case of a Hong Kong kleptomaniac and a Vietnam veteran who committed a series of horrific murders from their cabin in California.

The story of the "Death House Landlady", who took in elderly and disabled tenants, only to murder them for their social security paychecks

Exhibiting cruelty, callousness, and viciousness beyond any human understanding, Richard Ramirez terrorized Los Angeles with his spate of home invasions.

Serial killer Edmund Kemper killed six women in California and several members of his family.

Profiling the Belgian serial killer, convicted for kidnapping, torturing and sexually abusing six victims until his arrest in 1996.

A profile of Volker Eckert, the German truck driver who used his constant travelling to spread his killing spree across Europe.

A profile of the ghastly German serial killer who hunted and ate parts of his victims, earning him the title of the 'Ruhr Cannibal'.

An account of the German serial killer Fritz Honka, whose insecurities over his height and peculiar sexual habits led to him killing four prostitutes