Explore Killers

Marc Sappington is the subject of this documentary, known as 'The Kansas City Vampire' for his violent crimes

Marcel Petiot was a French serial killer active during World War II, who lured victims under the pretense of helping them escape Nazi-occupied France. Instead, he murdered them and disposed of their bodies. After the war, authorities uncovered the extent of his crimes, leading to his arrest and trial. Petiot was convicted and executed by guillotine in 1946, and his case remains one of the most infamous in French criminal history.

Marcus Wesson is a convicted serial killer who confessed to killing nine of his children and two other women in Fresno, California, in 2005.

Marie Hilley is a serial killer, also known as The Poisonous Secretary, who was convicted for multiple murders in the United States.

Mario Schembri is an Australian convicted killer who pleaded guilty to the manslaughter of Melbourne businessman Herman Rockefeller in January 2010. After a violent confrontation at Schembri's Hadfield home, Rockefeller died from injuries sustained during the assault. Schembri subsequently dismembered the victim's body with a chainsaw and burned the remains in an attempt to conceal the crime. He was sentenced to nine years' imprisonment with a non-parole period of seven years.

Mark Barton was an American mass murderer responsible for the 1999 Atlanta day trading office shootings. He killed multiple people at two offices after earlier murdering members of his own family. Barton later died by suicide, ending a multi-day manhunt. The case shocked the public and raised concerns about workplace violence and financial stress-related crimes.

Mark Bridger is a convicted child killer.

Mark Castellano admitted to committing a crime, as evidenced by his confession in the year 2015.