CHICAGO — 1978 · Serial Murder

The John Wayne Gacy Case

SolvedSources: ALast updated: 14 October 2026

Building contractor and well-known local figure John Wayne Gacy killed at least 33 young men and boys in the Chicago area between 1972 and 1978. In December 1978 the investigation into a missing teenager led police to his house in Norwood Park, where numerous remains were found beneath the building. Gacy was convicted of 33 murders in 1980 and sentenced to death; he was executed on 10 May 1994. In 2011 the Cook County Sheriff's Office reopened the file on unidentified victims and, using DNA and genetic genealogy, has identified several of them decades later.

Date
1978
Place
Illinois, USA, Chicago, US
Category
Serial Murder
Case Status
Solved
Coordinates
41.9850, -87.8300 ↗

Background

John Wayne Gacy was a building contractor who lived in the Norwood Park area on Chicago's northwest side and was known in his community as a friendly neighbour. He took part in local events and appeared in a clown costume at charity functions. This respectable image helped the crimes go unnoticed for a long time.

Between 1972 and 1978 at least 33 young men and boys were killed. Many of the victims had gone to Gacy's home, often on a pretext such as work, and many families were left for years not knowing what had happened.

What happened and the arrest

The investigation gathered pace after fifteen-year-old Robert Piest disappeared in Des Plaines on 11 December 1978. Police turned their attention to Gacy and arrested him on 21 December 1978. Searches beneath the house uncovered numerous remains. Investigators ultimately accounted for 33 victims: 26 were found in the crawl space of the home, three elsewhere on the property and four had been recovered from the Des Plaines River.

Gacy was convicted of 33 murders in 1980 and sentenced to death on 13 March 1980, which at that time was the largest number of murders attributed to a single person in the United States. His lawyers argued insanity; the jury rejected that defence.

Execution and identification work

After a long appeals process Gacy was executed by lethal injection at Stateville Correctional Center in Illinois on 10 May 1994. The case did not end there, however: some victims remained unidentified for decades.

In October 2011 the Cook County Sheriff's Office launched a renewed effort to identify the unnamed victims using DNA profiles, asking relatives of men who went missing in the 1970s for samples. As a result William Bundy (2011), James Haakenson (2017) and Francis Wayne Alexander (2021, through forensic genealogy) were given their names back; five victims remain unidentified.

Where it stands today

The Gacy case is often cited as a reminder of how seriously reports of missing young people should be taken and how important solid records are. Today the focus is on restoring the victims' names and stories and giving families answers after decades of uncertainty. On this page Dark Location remembers the victims through their own identities rather than through the offender.

Timeline of Events

  1. 1972First known murder.
  2. December 1978Search of his home during a missing-teen investigation; remains found.
  3. March 1980Convicted of 33 murders and sentenced to death.
  4. 10 May 1994Executed.
  5. 2011Cook County Sheriff reopens the investigation into unidentified victims.
  6. 2021Another victim identified through genetic genealogy.

Sources

Source grade A: several independent sources, at least one an official record or reference work. If you spot a mistake or something missing, report it with "Suggest a correction" in the app.

Frequently asked questions

How many people did John Wayne Gacy kill?

He was convicted of 33 murders committed between 1972 and 1978. Most victims were young men, and many were found beneath his home.

When was Gacy arrested and executed?

He was arrested on 21 December 1978, sentenced to death on 13 March 1980 and executed on 10 May 1994.

Have all of Gacy's victims been identified?

No. The Cook County Sheriff's Office has been working to identify them with DNA since 2011 and several have since been named; the work continues.

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🕯️ This record was prepared with respect, in memory of those who lost their lives.