John Wayne Gacy: The Killer Clown · 31 Aug 2026 · 12 min

Dead Under the Floor: How Gacy Hid Thirty-Three Murders in Plain Sight

Twenty-nine bodies buried beneath a suburban Chicago home, a contractor who dressed as a clown, and the neighbors who explained away the smell for years. This chapter follows the crimes, the crawl space, and the December 1978 disappearance that finally broke John Wayne Gacy's case wide open.

John Wayne Gacy: The Killer Clown
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Dead Under the Floor: How Gacy Hid Thirty-Three Murders in Plain Sight

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What's covered

The Weight of What Was Found Below

There's a number that sets this case apart from almost every other in American criminal history. Not the trial.

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The Man on West Summerdale Avenue

Gacy's house sat at eight two one three West Summerdale Avenue in Norwood Park Township, just outside Chicago. It was a single-story ranch house.

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What Was Happening Inside the House

Starting in nineteen seventy-two, Gacy began luring young men and teenage boys to his home under the pretense of construction work and job offers. His victims were mostly teenagers and young men, ranging in age from fourteen to twenty-one years old.

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The Smell That Wasn't Investigated

At some point the smell became undeniable. Neighbors noticed it.

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Robert Piest and the Night Everything Changed

On December thirteenth, nineteen seventy-eight, a fifteen-year-old named Robert Piest finished a shift at a pharmacy in Des Plaines, Illinois. He told his mother he'd be right back.

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The Confession and the Diagrams

Gacy didn't stay silent. That's worth pausing on.

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Trial and Conviction

In March nineteen eighty, Gacy went to trial. His defense team pursued an insanity argument, claiming he suffered from a personality disorder that made him unable to control his actions.

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The House, the Property, and the Years Between

By April nineteen seventy-nine, the house on West Summerdale Avenue was gone. Authorities demolished it.

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Execution and the Eight Who Remain Unnamed

On May tenth, nineteen ninety-four, John Wayne Gacy was executed by lethal injection at Stateville Correctional Center. He was fifty-two years old.

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What This Case Left Behind

The Gacy case reordered a lot of assumptions. It established clearly that a serial killer could operate for years inside an active, social community life without triggering detection.

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