It's not always the quiet ones.

In the case of John Wayne Gacy , it was the congenial contractor and political organizer who moonlighted as a party clown.

And when Gacy was unmasked as a serial killer of at least 33 boys, it was the 36-year-old business owner's prominence in his community that made the revelation all the more chilling. After the Chicago native was arrested on Dec. 21, 1978, the remains of 26 victims were found in the crawl space of Gacy's home in Norwood Park Township.

"The house wasn’t in some remote area," Michael Chernus , who plays the real-life boogeyman in the new Peacock series Devil in Disguise: John Wayne Gacy , told Chicago's WBEZ . "It was a suburban street like so many other suburban streets, with houses right next to each other, right next to

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