Episode 1
Ten Days
After a teenager disappears, officers track, interrogate and tail the man he was last seen with.
Episode 2
Johnny
Officers excavate the crawl space beneath Gacy's home; Gacy shows where he disposed of Rob's body.
Episode 3
Samuel and Randy
As police make a shocking discovery, the media circus begins; two teens navigate boyhood in Uptown.
Episode 4
Billy
A psychiatrist interviews Gacy; Tovar and Kozenczak uncover systemic failures; teenage love unfolds.
Episode 5
Billy and Dale
A blizzard buries Chicago; Kozenczak tracks down Gacy's surviving victims; a teen learns sex work.
Episode 6
Tim, John and Rob
In the past, Gacy confesses to Sam how he groomed, sexually assaulted and killed boys and young men.
Episode 7
David
Tovar drives Gacy to court hoping to uncover his kill count; Gacy's grooming of Cram is revealed.
Episode 8
Jeffrey
Jeffrey Rignall's story is told; Gacy's execution day brings protests, reunions and moral debates.