Unknown Killers

Dillon Alexander Waller is an American man convicted of the 2022 murder of his mother in New Mexico. The crime occurred within a domestic setting and involved attempts to conceal the offence. He was later convicted of first-degree murder and sentenced to life imprisonment.

Edward Theodore Gein became one of the most infamous killers in American history after murdering two women and exhuming numerous bodies from local cemeteries near Plainfield, Wisconsin, during the 1950s. Although convicted of only two murders, the disturbing discoveries inside his farmhouse—including items fashioned from human remains—made Gein a cultural phenomenon whose crimes inspired characters such as Norman Bates, Leatherface, and Buffalo Bill. His case remains one of the most extensively studied in criminal psychology.

Ian Rich became known in Ohio criminal history after carrying out a targeted drive-by shooting on Interstate 77 that killed David Perez and seriously wounded Jacqueline Perez on April 28, 2024. Prosecutors alleged Rich deliberately followed the couple from Newburgh Heights before pulling alongside their vehicle and firing multiple gunshots. He later pleaded guilty to involuntary manslaughter, attempted murder, and firearms offences, receiving a prison sentence of 40 to 46½ years. The case attracted significant attention because of the seemingly unprovoked nature of the attack and subsequent claims regarding Rich's mental health and drug use.

James Desborough is an English serial killer convicted of murdering Claudio Aquilino, Daniel Coleman and his prison cellmate, Steven Kempster, during 2025. Desborough met Aquilino and Coleman while they were living at a homeless shelter in Newquay before murdering, dismembering and attempting to conceal their remains in woodland near his cabin in Cornwall. While on remand awaiting trial, he strangled his prison cellmate at HMP Exeter. In July 2026, he was sentenced to a rare whole life order, ensuring he will never be released from prison. Police are also reviewing four unexplained deaths connected to the same homeless shelter, although Desborough has not been charged in relation to those deaths.

Julian Knight became one of Australia’s most notorious mass killers after carrying out the Hoddle Street massacre in Melbourne, Victoria, on August 9, 1987. Armed with multiple firearms, Knight opened fire on motorists and pedestrians along Hoddle Street, killing seven people and injuring numerous others in one of the deadliest mass shootings in Australian history at the time. The massacre shocked the nation and permanently altered public discussion surrounding gun control, mass violence, and offender psychology in Australia. Knight’s age, military background, and apparent emotional instability became major focuses during the investigation and trial. The case remained deeply embedded in Australian criminal history and later contributed to broader national debates surrounding firearm access and responses to mass casualty attacks.

Lance Kirkpatrick became one of Australia's most widely reported convicted killers after being found guilty of the 2022 murder of Melbourne mother Samantha Murphy. Murphy's disappearance prompted an extensive search across regional Victoria before investigators built a circumstantial case that ultimately led to Kirkpatrick's conviction. The case attracted national attention because of the lengthy investigation, widespread community involvement, and the absence of the victim's recovered remains.

Leo Boatman became notorious after carrying out a deadly stabbing attack on Bournemouth beach in England in 2024. The case generated major media attention across the United Kingdom because the killings occurred in a busy public coastal area during the evening, creating widespread panic and horror among witnesses. Boatman’s violent behavior, criminal background and apparent disregard for human life later became central issues throughout the investigation and court proceedings. The murders reignited public debate surrounding violent repeat offenders, knife crime and public safety in British coastal nightlife areas.

Lindsey Robert Rose is an Australian serial killer who murdered five people in New South Wales between 1984 and 1994. His victims included acquaintances and vulnerable individuals who were killed over a ten-year period before advances in forensic science and renewed investigations linked Rose to the crimes. Following his conviction, he was sentenced to five terms of life imprisonment without the possibility of parole and remains incarcerated.