Spudvisor
Michael Chernus

John Wayne Gacy (8 episodes)

Gabriel Luna

Det. Rafael Tovar (8 episodes)

James Badge Dale

Chief of Detectives Joe Kozenczak (8 episodes)

Chris Sullivan

Lead Prosecutor Bill Kunkle (8 episodes)

Marin Ireland

Elizabeth Piest (8 episodes)

Greg Bryk

Harold Piest (8 episodes)

Ted Dykstra

Det. Allen Fanholm (5 episodes)

Thom Nyhuus

Kenneth Piest (4 episodes)

Hamish Allan-Headley

Det. Michael Albrecht (3 episodes)

Nina Kiri

Mary Amirante (3 episodes)

Sprague Grayden

Bessie Stapleton (3 episodes)

Krista Bridges
Etienne Kellici

Samuel Stapleton (2 episodes)

Mason Versaw

Robert Donnelly (2 episodes)

Eva Foote
Christian Bako

Marko Butkovich (2 episodes)

Jim Annan

Judge Louis Garippo (2 episodes)

Ryker Baloun
Robert Meynell

Donald Voorhees Sr. (1 episode)

Andrew Johnston

Donald Voorhees Jr (1 episode)

Max Mattern

Billy Carroll (1 episode)

Levi Shelton

John 'Johnny' Szyc (1 episode)

Tom Barnett

Richard Szyc (1 episode)

Mitchell Court

Eldest Szyc Son (1 episode)

Megan Murphy
Dan Lett
Brenda Bazinet

Eugenia Godzik (1 episode)

Jessie Behan

Young Marion Gacy (1 episode)

Colton Ryan

Billy Kindred (1 episode)

Ianne Fields Stewart

Sophia St. Laurent (1 episode)

Ish Morris

Guard Jenkins (1 episode)

Lizzie Moffatt
Sam Wexler

Delivery Man 2 (1 episode)

Gavin Lewis

Timothy McCoy (1 episode)

Crede Cooper

John Butkovich (1 episode)

Christopher Jacot

Detective Everford (1 episode)

Luke Humphrey

Terry Sullivan (1 episode)

Daniel Griffin

Charlie Reynolds (1 episode)

Dwight Ireland

Press Conference Reporter (1 episode)

Morgan Kelly
Dylan Taylor

CPD Officer O'Neal (1 episode)

Kylee Evans

Deanna Amirante (1 episode)

Marcia Bennett

Delores Nieder (1 episode)

Ashley Michel Hoban

Executive Producer (8 episodes)

Noah Oppenheim

Executive Producer (8 episodes)

Ahmadu Garba

Executive Producer (8 episodes)

Liz Cole

Executive Producer (8 episodes)

Kelly Funke

Executive Producer (8 episodes)