Yegor Nikolayevich Khabarov (Russian: Егор Николаевич Хабаров; born May 18, 1979), known as The Electrician (Russian: Электрик), is a Russian murderer and suspected serial killer who was convicted of electrocuting at least two men in Yekaterinburg from 2008 to 2009, with the help of accomplice Sergey Kochnev. He was suspected in a total of seven deaths, but was never charged due to a lack of evidence.

Harvey Louis Carignan (May 18, 1927 – March 6, 2023) was an American serial killer who was sentenced to life in prison for the murders of two women in the early 1970s. He had been previously convicted of a 1949 rape and murder he committed while stationed in the U.S.

William Richard Bradford (May 18, 1946 – March 10, 2008) was an American convicted murderer and suspected serial killer and serial rapist who was incarcerated in San Quentin State Prison for the 1984 murders of his 15-year-old neighbor Tracey Campbell and barmaid Shari Miller. In July 2006, the Los Angeles County Sheriff's Department released a compilation of photos found in Bradford's apartment in the 1980s, depicting 54 different women in modelling poses.

The Moors murders were a series of child killings committed by Ian Brady and Myra Hindley in and around Manchester, England, between July 1963 and October 1965. The five victims – Pauline Reade, John Kilbride, Keith Bennett, Lesley Ann Downey and Edward Evans – were aged between 10 and 17, and at least four were sexually assaulted.