Conviction 1972 – 1978 Serial Killer Victims

John Wayne Gacy Victims

John Wayne Gacy tortured and murdered 33 young men and boys, burying 26 under his house. He was convicted in 1980 and executed in 1994. After his execution, investigators used DNA to identify unknown victims. Some remain unidentified. He performed as 'Pogo the Clown' at charity events, earning him the 'Killer Clown' nickname.

Status
Conviction
Date
1972 – 1978
Offender profile
John Wayne Gacy
Location
Chicago, Illinois
Victims
Male
Decade
1970s
Where the case stands
  1. Open
  2. Partly resolved
  3. Charges or trial
  4. ClosedConviction

At least one person was convicted in connection with the case.

Timeline to scale
Each dot is a dated event below; the distance between dots is elapsed time. The darker dot marks the incident.
January 3, 1972: Gacy commits his first known murder, killing 16-year-old Timothy McCoy at his Norwood Park Township home.July 31, 1975: 18-year-old employee John Butkovich disappears; he is later confirmed as one of Gacy's victims.December 11, 1978: 15-year-old Robert Piest goes missing after leaving to meet Gacy about a job, triggering the investigation.December 21, 1978: Gacy is arrested after police investigate Piest's disappearance.December 22, 1978: Gacy confesses; investigators begin recovering human remains from the crawl space beneath his house.February 6, 1980: Gacy's trial opens in Cook County Criminal Court on 33 counts of murder.March 13, 1980: A jury convicts Gacy and he is sentenced to death.May 10, 1994: Gacy is executed by lethal injection at Stateville Correctional Center.October 1, 2011: Sheriff Tom Dart reopens the effort to identify Gacy's unnamed victims; William Bundy is identified within weeks.July 1, 2017: Investigators identify 16-year-old James 'Jimmy' Haakenson of Minnesota through DNA.October 25, 2021: The Sheriff's Office announces the identification of Francis Wayne Alexander using forensic genetic genealogy.1972202150 years from incident to latest development
Illinois
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Between 1972 and 1978, John Wayne Gacy, a building contractor and locally active community figure in the Chicago suburb of Norwood Park Township, Illinois, murdered at least 33 young men and boys. Gacy typically lured victims, many of them teenagers or young laborers, to his ranch-style home at 8213 West Summerdale Avenue, where he assaulted and strangled them. His first known killing was that of 16-year-old Timothy McCoy in January 1972, and the pace of the murders increased in the mid- to late 1970s. Because of his public persona, including performing as a clown at children's parties and civic events, Gacy was later widely referred to in the press as the 'Killer Clown.'

Gacy concealed most of his victims on his own property. Investigators ultimately recovered 26 bodies buried in the crawl space beneath his house and three more elsewhere on the grounds; four additional victims were disposed of in the Des Plaines River after the crawl space ran out of room. The scale of the concealment was not discovered until authorities began investigating the December 1978 disappearance of 15-year-old Robert Piest, a pharmacy employee last seen leaving to meet Gacy about a job. Surveillance and a search warrant led police to the Summerdale Avenue address.

Gacy was arrested on December 21, 1978, and confessed the following day as human remains were unearthed from beneath his home. He was charged with 33 murders. His trial in Cook County began in February 1980; jurors rejected an insanity defense, and on March 13, 1980, Gacy was convicted and sentenced to death. After more than a decade of appeals, he was executed by lethal injection at Stateville Correctional Center on May 10, 1994. His conviction and execution are matters of established public record.

Although Gacy himself was brought to justice, not all of his victims were identified at the time. Several sets of remains were buried as unidentified for decades. In 2011, Cook County Sheriff Tom Dart reopened the identification effort, exhuming unidentified remains and seeking DNA samples from families of young men who had gone missing across the United States in the 1970s. Within weeks the office identified William Bundy, a 19-year-old who had disappeared in 1976. In 2017, investigators identified 16-year-old James 'Jimmy' Haakenson of Minnesota, and in October 2021 they identified Francis Wayne Alexander using forensic genealogy in collaboration with the DNA Doe Project.

As of the mid-2020s, the Cook County Sheriff's Office reports that five of Gacy's victims remain unidentified. Investigators continue to solicit DNA samples via buccal (cheek) swabs from living relatives of males who went missing in the United States between roughly 1970 and 1979, comparing those profiles against the recovered remains and, where feasible, applying investigative genetic genealogy. The Sheriff's office frames the ongoing initiative as an effort to give the remaining victims their names back and to bring answers to families of the missing.

serial killerKiller Clownexecution
  1. January 3, 1972
    Gacy commits his first known murder, killing 16-year-old Timothy McCoy at his Norwood Park Township home.
  2. July 31, 1975
    18-year-old employee John Butkovich disappears; he is later confirmed as one of Gacy's victims.
  3. December 11, 1978
    15-year-old Robert Piest goes missing after leaving to meet Gacy about a job, triggering the investigation.
  4. December 21, 1978
    Gacy is arrested after police investigate Piest's disappearance.
  5. December 22, 1978
    Gacy confesses; investigators begin recovering human remains from the crawl space beneath his house.
  6. February 6, 1980
    Gacy's trial opens in Cook County Criminal Court on 33 counts of murder.
  7. March 13, 1980
    A jury convicts Gacy and he is sentenced to death.
  8. May 10, 1994
    Gacy is executed by lethal injection at Stateville Correctional Center.
  9. October 1, 2011
    Sheriff Tom Dart reopens the effort to identify Gacy's unnamed victims; William Bundy is identified within weeks.
  10. July 1, 2017
    Investigators identify 16-year-old James 'Jimmy' Haakenson of Minnesota through DNA.
  11. October 25, 2021
    The Sheriff's Office announces the identification of Francis Wayne Alexander using forensic genetic genealogy.

About this entry

This case is recorded as conviction and is kept in the index for its historical and investigative significance. At least one person was convicted in connection with the case.

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Entry last updated November 4, 2026.

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Offender profile

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