Tim, John and Rob

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

Mason Versaw

Robert Donnelly

Hamish Allan-Headley

Det. Michael Albrecht

Ted Dykstra

Det. Allen Fanholm

Eva Foote

Carol Gacy

Kristine Nielsen

Marion Gacy

Gavin Lewis

Timothy McCoy

Crede Cooper

John Butkovich

Ryker Baloun

Robert Piest

Thomas Mitchell Barnet

Phil Torf