When a teenager goes missing, it becomes clear that many young men and boys have disappeared at the hands of John Wayne Gacy, the prime suspect.
After a teenager disappears, officers track, interrogate and tail the man he was last seen with.
Officers excavate the crawl space beneath Gacy's home; Gacy shows where he disposed of Rob's body.
As police make a shocking discovery, the media circus begins; two teens navigate boyhood in Uptown.
A psychiatrist interviews Gacy; Tovar and Kozenczak uncover systemic failures; teenage love unfolds.
A blizzard buries Chicago; Kozenczak tracks down Gacy's surviving victims; a teen learns sex work.
In the past, Gacy confesses to Sam how he groomed, sexually assaulted and killed boys and young men.
Tovar drives Gacy to court hoping to uncover his kill count; Gacy's grooming of Cram is revealed.
Jeffrey Rignall's story is told; Gacy's execution day brings protests, reunions and moral debates.
Michael Chernus
John Wayne Gacy
Gabriel Luna
Det. Rafael Tovar
James Badge Dale
Chief of Detectives Joe Kozenczak
Michael Angarano
Sam Amirante
Chris Sullivan
Lead Prosecutor Bill Kunkle
Marin Ireland
Elizabeth Piest
2014
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1987
2016
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