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.
Devil in Disguise: John Wayne Gacy (Season 1)

Ten Days (Episode 1) 7.0
Writer: Patrick Macmanus
Air date: 2025-10-16
Runtime: 59 min
Overview: After a teenager disappears, officers track, interrogate and tail the man he was last seen with.

Johnny (Episode 2) 7.4
Air date: 2025-10-16
Runtime: 59 min
Overview: Officers excavate the crawl space beneath Gacy's home; Gacy shows where he disposed of Rob's body.

Samuel and Randy (Episode 3) 7.3
Writer: Matthew White
Air date: 2025-10-16
Runtime: 58 min
Overview: As police make a shocking discovery, the media circus begins; two teens navigate boyhood in Uptown.

Billy (Episode 4) 7.4
Writer: Yasmin Almanaseer
Air date: 2025-10-16
Runtime: 61 min
Overview: A psychiatrist interviews Gacy; Tovar and Kozenczak uncover systemic failures; teenage love unfolds.

Billy and Dale (Episode 5) 7.7
Writer: Sebastian Rea
Air date: 2025-10-16
Runtime: 48 min
Overview: A blizzard buries Chicago; Kozenczak tracks down Gacy's surviving victims; a teen learns sex work.

Tim, John and Rob (Episode 6) 7.9
Air date: 2025-10-16
Runtime: 61 min
Overview: In the past, Gacy confesses to Sam how he groomed, sexually assaulted and killed boys and young men.

David (Episode 7) 7.0
Air date: 2025-10-16
Runtime: 57 min
Overview: Tovar drives Gacy to court hoping to uncover his kill count; Gacy's grooming of Cram is revealed.

Jeffrey (Episode 8) 6.1
Air date: 2025-10-16
Runtime: 59 min
Overview: Jeffrey Rignall's story is told; Gacy's execution day brings protests, reunions and moral debates.

Seasons

Episodes 8