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

Greg Bryk

Harold Piest

Ryker Baloun

Rob Piest

Etienne Kellici

Samuel Stapleton

Finlay Wojtak-Hissong

Randy Reffett

Robert Meynell

Donald Voorhees Sr.

Andrew Johnston

Donald Voorhees Jr

Joshua Kilimnik

Teenage Gacy

Max Mattern

Billy Carroll

Mason Versaw

Robert Donnelly

Patrick Macmanus