Documentary profiling Chicago killer John Wayne Gacy, who was well-liked by his local community, until it emerged he had ended the lives of 33 men in the 1970s.

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.

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.

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

As well as being a well-spoken, well-respected computer expert, Randy Kraft was a serial killer suspected of killing more than 60 victims.

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.

Billy Mansfield Jr murdered at least five victims, but investigators suspect the extent of his serial killing is still to be revealed.

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'.

A profile of serial killer Danny Rolling, nicknamed the Gainesville Ripper, who targeted Florida students with crimes so horrific that he inspired the movie Scream.

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.

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

A look at the horrific crimes committed by Kansas City serial killer Robert Berdella, known for kidnapping, raping, torturing and butchering his victims.

A look at the life of the Polish serial killer, nicknamed the Vampire of Krakow for his wildly varying choice of victims, from young children to the elderly.

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 profile of the serial killer Robert Lee Yates, who narrowly avoided the death penalty for killing at least 13 sex workers during a horrific reign of terror.

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

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

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

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

An insight into the crimes of Jeffrey Dahmer, the American serial killer dubbed the `Milwaukee Cannibal' after he raped, murdered and dismembered 17 people between 1978 and 1991

A profile of Ed Gein, the killer and body-snatcher who came to be known as the `Butcher of Plainfield', and whose story is thought to have inspired Alfred Hitchcock's Psycho.

An insight into the crimes of Thierry Paulin, who attacked, robbed and murdered at least 18 elderly women in France during the 1980s, to fund his extravagant lifestyle.

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.