Rich Ambler Director Bo Svenson Detective John Amos Actor Rusty Sneary Adult Jeff Dahmer Actor Scott Cordes Lionel Dahmer Actor Jeannine Hutchings Catherine Dahmer Actor Cathy Barnett Shari Dahmer Actor Kip Niven Attorney Howard Parker Actor Walter Coppage Judge Actor Erin McGrane Joyce Dahmer Actor Wood Dickinson Screenwriter, Producer, Executive Producer Christopher Ryan Screenwriter Roland Schlotzhauer Cinematographer Heather Laird Casting