Billy

Cast

• 

  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

• Robert Meynell

  Donald Voorhees Sr.

• 

  Andrew Johnston

  Donald Voorhees Jr

• Joshua Kilimnik

  Teenage Gacy

• 

  Ted Dykstra

  Det. Allen Fanholm

• 

  Cricket Brown

  Kerry Piest

• 

  Thom Nyhuus

  Kenneth Piest

• Lena Pepe

  Juanita

• Samantha Adams

  Marlynn Gacy

• 

  Mallory Bechtel

  Mary Jane

• 

  Brenda Bazinet

  Eugenia Godzik

• Jessie Behan

  Young Marion Gacy

• 

  Kathryn Bellamy

  Beth

• 

  Quincy Tyler Bernstine

  Dr. Healy