NEED TO KNOW

John Wayne Gacy was a serial killer in the 1970s who murdered at least 33 boys and young men

After evading police for six years, Gacy was arrested in 1978 after they linked him to the murder of 15-year-old Robert Piest

The Peacock scripted series Devil in Disguise: John Wayne Gacy tells the story, with Michael Chernus acting as Gacy

Devil in Disguise: John Wayne Gacy tells the real-life story of the brutal crimes of serial killer John Wayne Gacy .

In the Peacock series, Michael Chernus portrays the murderer who killed at least 33 boys and men in the 1970s . Gacy, who was given the moniker the "Killer Clown" because he often dressed as one when volunteering, targeted young men and sexually assaulted many of them before murdering them.

After killing his victims,

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