Stuart Campbell is featured as a killer in World's Most Evil Killers - Season 6, Episode 4 (2022)
Daniel Gonzalez is a convicted killer featured in the World's Most Evil Killers series.
Malcolm Green is a murderer featured in World's Most Evil Killers, Season 6, Episode 10 (2022)
John Allen Muhammad is the person who, along with Lee Malvo, committed the series of sniper attacks in Washington, D.C., Maryland, and Virginia in 2002
Lee Malvo is a co-offender in the 2002 Beltway sniper attacks carried out with John Allen Muhammad
Willy Inmon is identified as a 'vigilante killer' in the title of the episode, suggesting he committed acts of violence under the belief of enforcing law and order.
Serial killer Jerry Brudos is the subject of this episode, known for his grisly crimes against women in the late 1960s.
Billy Dunlop is a serial killer who is the subject of World's Most Evil Killers, Season 5, Episode 6.
Peter Moore is a killer, focus of World's Most Evil Killers Season 4, Episode 16 (2021)
Robert Napper is a convicted killer responsible for a series of violent crimes and murders in the UK.
John Cooper is a serial killer who committed several murders in the United States during the 1980s
Colin Ireland is a serial killer responsible for the murder of multiple women in Northern Ireland during the 90s.
Horst Kroner is a notorious killer, featured in World's Most Evil Killers as the main subject of Season 2, Episode 16.
Stuart Hazel is a notorious killer featured in the documentary 'World's Most Evil Killers - Season 1, Episode 9' (2021)
Steve Wright is a notorious serial killer responsible for the murders of five sex workers in Ipswich, England between 2006 and 2008.