December 22nd 1978 Serial killer John Wayne Gacy, who was subsequently convicted of the murder of 33 young men, is arrested. No wonder why I'm scared of clowns...

The Top 50 Most Infamous Criminals in American History!

December 22nd 1978 Serial killer John Wayne Gacy, who was subsequently convicted of the murder of 33 young men, is arrested. No wonder why I'm scared of clowns...

Slices of John Wayne Gacy’s brain. He donated the organ to science after his execution. Studies have not revealed any physical abnormalities with the killer’s brain.

Slices of John Wayne Gacy’s brain. He donated the organ to science after his execution. Studies have not revealed any physical abnormalities with the killer’s brain.

However, the killer that Moss established the best relationship with was John Wayne Gacy.

However, the killer that Moss established the best relationship with was John Wayne Gacy.

John Wayne Gacy dressed as his alter-ego, Pogo, c.1970’s.

25 Creepy Photos: Welcome to Your Nightmare

John Wayne Gacy's clown suits at the Crime and Punishment Museum.

John Wayne Gacy

INSIDE THE DEMENTED MIND OF JOHN WAYNE GACY, JR: Enter the basement of America's Killer Clown in this excerpt from Tim Cahill's true crime exposé, Buried Dreams.

INSIDE THE DEMENTED MIND OF JOHN WAYNE GACY, JR: Enter the basement of America's Killer Clown in this excerpt from Tim Cahill's true crime exposé, Buried Dreams.

Floorplan drawn by John Wayne Gacy showing the locations of his victims.

Floorplan drawn by John Wayne Gacy showing the locations of his victims.

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