More than a decade after his arrest shocked America, serial killer John Wayne Gacy was executed for the murders of at least 33 young men and teenage boys.

Known infamously as the “Killer Clown,” Gacy spent years hiding behind the image of a friendly community member while secretly carrying out some of the most disturbing crimes in U.S. history.

How John Wayne Gacy Was Finally Caught

Throughout the 1970s, Gacy lived a double life in Illinois, often entertaining children at parties and charity events while dressed as a clown.

Behind the scenes, investigators later discovered he had lured numerous young men to his home, where many were assaulted and murdered.

Police uncovered the horrifying truth in 1978 after several victims were traced back to Gacy, leading investigators to search his property.

Many of the bodies were eventually found buried beneath his house.

He Was Sentenced to Death in 1980

In March 1980, Gacy was convicted of multiple murders and sentenced to death.

Despite overwhelming evidence presented during the trial, Gacy continued insisting he did not feel remorse for his crimes.

In recorded interviews later featured in Netflix’s Conversations with a Killer: The John Wayne Gacy Tapes, he claimed he did not believe he was truly guilty.

The case quickly became one of the most infamous serial murder investigations in American history.

How John Wayne Gacy Died

After spending more than 14 years on death row, Gacy was executed by lethal injection on May 10, 1994, at Stateville Correctional Center in Illinois.

According to reports, the execution did not go entirely smoothly.

Officials reportedly encountered complications during the injection process after one of the chemical lines became clogged, causing the procedure to take significantly longer than expected.

Witnesses said it ultimately took around 18 minutes for Gacy to die.

His Final Words Became Infamous

Moments before his execution, Gacy reportedly delivered a final insult to authorities.

His last words were: “Kiss my ass.”

Reports also revealed that his final meal included Kentucky Fried Chicken, fried shrimp, strawberries, fries, and a Diet Coke.

The details surrounding his final hours continue drawing public fascination decades later.

Crowds Gathered Outside During the Execution

On the night Gacy was executed, hundreds of people reportedly gathered outside in Chicago celebrating the end of one of America’s most notorious killers.

Some carried anti-Gacy signs and clown-themed displays while chanting as news of the execution spread.

For families of victims and survivors connected to the case, the execution marked the closing of a painful chapter that had haunted communities for years.

The Case Still Fascinates Audiences Today

More than 30 years after his death, documentaries and dramatizations about Gacy continue attracting massive audiences.

Streaming platforms including Netflix and Peacock have revisited the case through multiple true crime series exploring how Gacy managed to conceal his crimes for so long.

Experts say the case remains one of the most disturbing examples of how dangerous predators can sometimes hide behind ordinary public personas.

Even decades later, the crimes of John Wayne Gacy continue horrifying true crime audiences around the world.