CONTENT NOTE: This article discusses sexual assault, murder, young male victims, concealment of remains, and capital punishment.
Victims first. Evidence second. Offender third.
The Chicago-Area Murders
John Wayne Gacy was convicted in Illinois of murdering 33 young men and boys. Most of the known victims were buried in the crawl space and elsewhere on his property in suburban Chicago.
The Investigation
The disappearance of teenager Robert Piest in December 1978 intensified police scrutiny of Gacy. Surveillance, search warrants, witness accounts, and physical evidence ultimately led investigators to his home and the recovery of human remains.
The Victims
Thirty-three victims were attributed to Gacy at trial. Identification took decades, and several victims remained unidentified for many years.
Conviction and Execution
Gacy was convicted in 1980 on 33 counts of murder and sentenced to death. Illinois executed him on May 10, 1994.
Why This Case Matters
The Gacy case remains a major example of how missing young men can be dismissed or fragmented across jurisdictions, delaying recognition of a serial pattern.
Known Victims
Twenty-eight of Gacy’s 33 known victims have been identified. Five remain unidentified.
- Timothy Jack McCoy
- John Butkovich
- Darrell Julius Samson
- Randall Wayne Reffett
- Samuel G. Dodd Stapleton
- Michael Lawrence Bonnin
- William Huey Carroll Jr.
- James Byron Haakenson
- Rick Louis Johnston
- Kenneth Ray Parker
- Michael M. Marino
- William George Bundy
- Francis Wayne Alexander
- Gregory John Godzik
- John Alan Szyc
- Jon Steven Prestidge
- Matthew Walter Bowman
- Robert Edward Gilroy Jr.
- John Antheney Mowery
- Russell Lloyd Nelson
- Robert David Winch
- Tommy Joseph Boling
- David Paul Talsma
- William Wayne Kindred
- Timothy David O’Rourke
- Frank William Landingin
- James Mazzara
- Robert Jerome Piest
Five additional victims recovered from Gacy’s property remain unidentified. Identification work continues as forensic technology advances.
Investigation Highlights
- Robert Piest’s December 1978 disappearance focused investigators on Gacy within hours.
- Surveillance, interviews, search warrants, and items belonging to missing young men built probable cause.
- The second search of the Summerdale Avenue property led to discovery of human remains and then excavation of the crawl space.
- Cook County reopened identification efforts in 2011; William Bundy, James Haakenson, and Francis Wayne Alexander were identified using modern DNA methods.
Psychiatric and Psychological Record
Gacy’s mental-health evidence was contested. A 1968 evaluation diagnosed antisocial personality disorder and found him competent. At the murder trial, defense experts offered schizophrenia/borderline formulations and an insanity theory, while prosecution experts rejected psychosis and emphasized antisocial personality features. The jury rejected the insanity defense.
Modus Operandi vs. Signature
Modus operandi: Luring young males through work offers, money, rides, alcohol, or trust; the “handcuff trick”; restraint; sexual assault; strangulation or asphyxiation; and concealment on his property or in the Des Plaines River.
Signature-like behavior: The repeated “handcuff trick,” rope-tourniquet “rope trick,” prolonged domination/torture, and taunting went beyond what was required to kill and are distinctive behavioral signatures.
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