William George "Bill" Bonin, also known as the Freeway Killer, was an American serial killer and twice-paroled sex offender who murdered a minimum of 21 boys and young men in a series of killings in southern California between 1979 and 1980. Bonin is also suspected of committing a further fifteen murders. Described by the prosecutor at his first trial as "the most arch-evil person who ever existed", Bonin was convicted of fourteen of the murders linked to the "Freeway Killer" in two separate trials in 1982 and 1983. He spent fourteen years on death row before he was executed by lethal injection at San Quentin State Prison in 1996.

Richard Trenton Chase was an American serial killer, cannibal, and necrophile who killed six people in the span of a month in 1977 and 1978 in Sacramento, California. He was nicknamed The Vampire of Sacramento because he drank his victims' blood and cannibalized their remains.

The Chicago Tylenol murders were a series of poisoning deaths resulting from drug tampering in the Chicago metropolitan area in 1982. The victims had all taken Tylenol-branded acetaminophen capsules that had been laced with potassium cyanide. A total of seven people died in the original poisonings, with several more deaths in subsequent copycat crimes.

Marc Vincent Sappington is an American spree killer and cannibal convicted of murdering four acquaintances in March and April 2001 in Kansas City, Kansas. He gained notoriety for eating part of the leg of one of his victims, Alton "Fred" Brown.

Richard Benjamin Speck was an American mass murderer who killed eight student nurses in their South Deering, Chicago residence on the night of July 13–14, 1966. A ninth potential victim, student nurse Corazon Amurao, escaped Speck's detection by hiding beneath a bed.

Heriberto Seda, often referred to as The New York Zodiac, is an American serial killer who struck New York City from 1990 to 1993. Before being caught on June 18, 1996, Seda killed three people and wounded five others (four critically). Seda is believed to have admired San Francisco's Zodiac Killer for avoiding capture. Police described Seda, a Brooklyn resident, as a recluse obsessed with astrology and death. Seda was formally charged in the case on June 21, 1996, convicted in 1998, and sentenced to 232 years imprisonment.

Jerome Henry "Jerry" Brudos (January 31, 1939 – March 28, 2006) was an American serial killer and necrophile who committed the murders of at least four women in Oregon between 1968 and 1969.

David Russell Williams is a British-born Canadian former colonel of the Canadian Armed Forces and convicted double-murderer who was sentenced to life imprisonment for the murders of Marie-France Comeau in November 2009 and Jessica Lloyd in January 2010.

Alton Coleman was an American serial killer who, along with accomplice Debra Brown, committed a crime spree across six states in the Midwest between May and July 1984 that resulted in the deaths of eight people. Coleman, who received death sentences in three states, was executed by the state of Ohio in 2002. Brown was sentenced to death in Ohio and Indiana, but the sentences were later reduced to life without parole and 140 years, respectively.

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Joseph Edward Duncan III was an American convicted serial killer who was on death row in federal prison in conjunction with the 2005 kidnappings and murders of members of the Groene family of Coeur d'Alene, Idaho. He was also serving 11 consecutive sentences of life without parole in conjunction with the same crimes as well as the 1997 murder of Anthony Martinez of Beaumont, California. Additionally, Duncan confessed to — but had not been charged with — the 1996 murder of two girls, Sammiejo White and Carmen Cubias, in Seattle.