Marc Meyers Director, Screenwriter, Producer Ross Lynch Jeffrey Dahmer Actor Alex Wolff Derf Actor Anne Heche Joyce Dahmer Actor Dallas Roberts Lionel Dahmer Actor Miles Robbins Lloyd Figg Actor Vincent Kartheiser Dr. Matthews Actor Cameron McKendry Moose Actor Harrison Holzer Mike Actor Christopher Mele Mr. Fedele Actor Tommy Nelson Neil Actor Liam Koeth Dave Dahmer Actor Jody Girgenti Producer Adam Goldworm Producer Michael Merlob Producer Milan Chakraborty Producer Giorgio Angelini Executive Producer Mike Novogratz Executive Producer Daniel Katz Cinematographer Jamie Kirkpatrick Film Editing Andrew Hollander Original Music Jennifer Klide Production Design Carmen Navis Set Decoration Carla Shivener Costume Design Stephanie Holbrook Casting