No Further Event Killers

Martin Bryant became Australia’s most notorious mass murderer after carrying out the Port Arthur massacre in Tasmania on April 28, 1996. Armed with semi-automatic rifles, Bryant killed 35 people and injured 23 others across multiple locations around the historic Port Arthur tourist site, making it the deadliest mass shooting in modern Australian history. The massacre shocked Australia and triggered sweeping national gun law reforms under Prime Minister John Howard. Bryant’s name became permanently associated with mass casualty violence, firearm legislation, and public trauma across the country. The scale of the killings, the randomness of the victims, and the horrifying duration of the attack turned the Port Arthur massacre into one of the most historically significant crimes in Australian history.

Melody Walker Farris was convicted of murdering her husband, 58-year-old Atlanta attorney Gary Farris, at their Cherokee County, Georgia, property in July 2018. Gary's extensively burned remains were discovered on a burn pile days after his disappearance, with a bullet lodged in his rib cage. Prosecutors argued that Melody killed her husband because she wanted to end their troubled marriage, pursue a relationship with her lover Roy "Rusty" Barton and gain access to Gary's substantial assets. A jury convicted her of malice murder, felony murder, aggravated assault, concealing the death of another and making a false statement. She was sentenced to life imprisonment with the possibility of parole after 30 years, plus five years for concealing Gary's death and five years for making false statements.

Michael Swango became one of the most notorious medical serial killers in American history after being linked to a series of poisonings involving patients, coworkers, and acquaintances over several decades. A licensed physician and former paramedic, Swango exploited positions within hospitals and medical institutions to gain access to vulnerable victims while maintaining the outward image of a highly educated healthcare professional. The case generated international attention because Swango continued obtaining medical employment despite repeated suspicions, disciplinary actions, and criminal convictions. Investigators later connected him to deaths and poisonings across the United States and Africa, leading many experts to believe the true number of victims may never be fully known. His ability to repeatedly evade detection turned the case into one of the most disturbing examples of institutional failure and medical predation in modern criminal history.

Mikhail Viktorovich Popkov, known as the "Angarsk Maniac" and "Werewolf," is a former Russian police officer who murdered women across the Irkutsk region between 1992 and 2010. He typically approached women at night in his police vehicle, offering them rides before taking them to isolated locations where he sexually assaulted and murdered them using weapons including knives, axes, screwdrivers and ropes. Popkov was arrested in 2012 after DNA testing connected him to the killings and was subsequently convicted in multiple trials. By 2026, courts had established his responsibility for 91 murders and three attempted murders, making him one of Russia's most prolific serial killers. He is serving life imprisonment in a special-regime prison in Mordovia.

Mitchell Sims became one of America's most notorious transient serial killers after carrying out a series of murders across multiple states during the 1980s. Nicknamed the "Pizza Hut Serial Killer," Sims was convicted of abducting, robbing, and murdering pizza delivery driver John Harrington in Las Vegas, Nevada, while investigators also linked him to the murders of another pizza employee and a customer in South Carolina. His willingness to kill complete strangers during robberies, combined with his mobility across state lines, made him one of the FBI's most infamous traveling serial offenders before his execution in 2015.

Moses Sithole became one of Africa's most prolific serial killers after murdering at least 38 young women in and around Johannesburg, South Africa, between 1994 and 1995. Known as the "ABC Killer" because many of the murders occurred in Atteridgeville, Boksburg, and Cleveland, Sithole lured victims with false promises of employment before sexually assaulting and murdering them. His case shocked post-apartheid South Africa and remains one of the country's deadliest serial murder investigations.

Neil Entwistle murdered his wife, Rachel Entwistle, and their nine-month-old daughter, Lillian Rose Entwistle, at their home in Hopkinton, Massachusetts, in January 2006. After shooting both victims with a stolen handgun, Entwistle fled to his native England, initially claiming he had discovered the bodies before leaving the United States. Investigators quickly uncovered evidence contradicting his account, leading to his arrest in London and extradition to Massachusetts. In 2008, a jury convicted Entwistle of two counts of first-degree murder, and he was sentenced to life imprisonment without the possibility of parole.

Nicholas Hartman murdered his wife, Alisa Hartman, in Florida in 2012, beating her to death inside their home. The killing initially presented investigators with a suspicious domestic homicide scene, but evidence ultimately led to Hartman being prosecuted for his wife's death. He was convicted of murder and sentenced to 50 years in prison, bringing the case to a close after the investigation established his responsibility for Alisa's death.