Silvo Plut (29 May 1968 – 28 April 2007) was a Slovenian serial killer. He was sentenced to 30 years in prison for the murder of Ljubica Ulčar and the attempted murder of her husband Miro Ulčar on 24 February 2006.

Thomas Gagliano (born Tommaso Gagliano, Italian: [tomˈmaːzo ɡaʎˈʎaːno]; May 29, 1883 − February 16, 1951) was an Italian-born American mobster and boss of what U.S. federal authorities would later designate as the Lucchese crime family, one of the "Five Families" of New York City.

Fred "Killer" Burke (May 29, 1893 – July 10, 1940) was an American armed robber and contract killer responsible for many crimes during the Prohibition era. He was considered a prime suspect in the Saint Valentine's Day Massacre of 1929.

Gary Leon Ridgway (born February 18, 1949), known as the Green River Killer or the Green River Strangler, is an American serial killer who was convicted of murdering forty-nine women between 1982 and 1998 in the northwestern United States. At the time of his arrest in 2001, he was believed to be the most prolific serial killer in United States history, according to confirmed murders.