
Adolfo Constanzo
Adolfo de Jesús Constanzo became one of Mexico's most notorious serial killers after leading a violent criminal cult that combined ritualistic beliefs with narcotics trafficking during the 1980s. Operating primarily in Mexico City and Matamoros, Constanzo and his followers carried out numerous murders as part of ceremonies they believed would provide supernatural protection and success. The discovery of multiple victims at his ranch in 1989 exposed one of the most disturbing criminal conspiracies in Mexican history.

Aileen Wuornos
Aileen Wuornos was an American serial killer who murdered multiple men in Florida between 1989 and 1990. Operating primarily along highways, she targeted men she encountered while working as a sex worker. Her case gained widespread attention due to her background, her claims of self-defense, and the rarity of a female serial killer receiving the death penalty. Wuornos was convicted of multiple murders and executed in 2002.

Andrew Cunanan
Andrew Cunanan was an American spree killer responsible for a series of murders across multiple U.S. states in 1997. His crimes unfolded over several months and involved both known associates and opportunistic victims, culminating in the high-profile murder of fashion designer Gianni Versace. Cunanan became one of the most wanted fugitives in the United States during the manhunt that followed. His killing spree ended when he died by suicide in July 1997 before he could be captured and tried.

Christopher Davis
Christopher Davis is an American man convicted in connection with the 2023 murder of his boyfriend in Cape Coral, Florida. The case drew attention due to the circumstances of the disappearance and the subsequent investigation. Davis was later found guilty of second-degree murder and related offences. He was sentenced to life imprisonment along with additional years for associated charges.

Christopher Monks Jr.
Christopher Monks Jr. became the subject of a high-profile criminal case after conspiring to murder his adoptive parents in Kent, England, in 2009. The plot involved recruiting an online acquaintance, Shaun Skarnes, to carry out the killings while his parents slept. The attack failed when Christopher Monks Sr. awoke and disarmed the intruder before police were called. Monks was convicted of conspiracy to murder and made subject to an indefinite hospital order.

Colin Ireland
Colin Ireland became one of the United Kingdom's most infamous serial killers after murdering five gay men in London over a seven-week period in 1993. Seeking notoriety, Ireland later admitted he deliberately set out to become a serial killer after reading an article suggesting Britain had none. Nicknamed the "Gay Slayer," he targeted men he met in London pubs before strangling them in their own homes. His brief but deadly murder spree shocked Britain and remains one of the country's most disturbing examples of predatory serial homicide.

Dennis Nilsen
Dennis Andrew Nilsen became one of the United Kingdom's most infamous serial killers after murdering at least 15 young men and boys in London between 1978 and 1983. Often referred to as the "Muswell Hill Murderer," Nilsen lured vulnerable victims to his home before strangling them and keeping their bodies for extended periods. His crimes were uncovered only after human remains blocked drains at his apartment building, leading to one of Britain's most shocking homicide investigations.
Gary Ray Bowles
Gary Ray Bowles was an American serial killer known as the "I-95 Killer," responsible for the murders of multiple men across several states in the 1990s. His victims were targeted along the Interstate 95 corridor. Bowles was eventually arrested, convicted, and sentenced to death. He was executed in 2019, and his case remains one of the most notable serial murder cases involving interstate crime patterns in the United States.