John Wayne Gacy

It's unclear if the new owners are aware that their home is the property where John Wayne Gacy tried to hide 29 bodies.

The notorious sex trafficking ring operator John David Norman's closest associate, Phil Paske, had worked for John Wayne Gacy — but was Norman, a known sex offender, involved in the Gacy's crimes, as the serial killer suggested?

Sam Amirante's first paying client as a private attorney was an infamous one.

Jeffrey Rignall was lured into John Wayne Gacy's car, chloroformed and then brutally raped and beaten. When police downplayed the attack, he decided to conduct his own search for his attacker.

Many of John Wayne Gacy's victims, like John Szyc and Gregory Godzik, were dismissed as runaways.

As investigators were searching for missing teen Robert Piest in 1978, they began trailing John Wayne Gacy. He wasn't shy about interacting with them.

When authorities searched John Wayne Gacy's home in 1978 in connection with the disappearance of 15-year-old Rob Piest, they came across shackles, a high school class ring and a pair of driver's licenses that didn't belong to Gacy.

"John Wayne Gacy: Devil in Disguise" premieres on Peacock Thursday, March 25.

Also included in the creepy collection are Gacy's prison letters to his stepdaughter, the last Polaroid he ever took, and the pack of cigarettes he had before his execution.

In 1978, John Wayne Gacy, a well-respected businessman from Illinois, murdered more than 30 boys and young men.