Unable to process the death of his daughter, Detective Boyd embarks on a hunt for a serial killer who murders according to a brutal tribal ritual: Muti. The only person who can help Boyd is Professor Mackles, an anthropologist who hides an unspeakable secret. The line between sanity and madness thins as Boyd goes deeper into the killer’s world.
Unfortunately the movie The Ritual Killer is not yet available on HBO Max.
| Directing | George Gallo | Director |
| Camera | Andrzej Sekula | Director of Photography |
| Writing | Joe Lemmon | Story |
| Writing | Francesco Cinquemani | Story |
| Writing | Giorgia Iannone De Sousa | Story |
| Writing | Bob Bowersox | Screenplay |
| Writing | Jennifer Lemmon | Screenplay |
| Writing | Francesco Cinquemani | Screenplay |
| Writing | Giorgia Iannone De Sousa | Screenplay |
| Writing | Luca Giliberto | Screenplay |
| Writing | Ferdinando Dell'Omo | Screenplay |
| Production | Joe Lemmon | Producer |
| Production | Bret Saxon | Producer |
| Production | Jeff Bowler | Producer |
| Production | Andrea Iervolino | Producer |
| Production | Monika Bacardi | Producer |
| Production | Danielle Maloni | Producer |
| Production | Luca Matrundola | Executive Producer |
| Production | Richard Salvatore | Executive Producer |
| Production | David E. Ornston | Executive Producer |
| Production | Nate Adams | Executive Producer |
| Production | Galen Smith | Executive Producer |
| Production | Marc Danon | Executive Producer |
| Production | Giovanna Trischitta | Executive Producer |
| Production | Nat McCormick | Executive Producer |
| Editing | Yvan Gauthier | Editor |
| Sound | Tom Russbueldt | Original Music Composer |
| Sound | Aldo Shllaku | Music Producer |
| Art | Joe Lemmon | Production Design |
| Art | Markos Keyto | Production Design |
| Art | Francesco Cotone | Production Design |
| Costume & Make-Up | Lenka Padysakova | Costume Designer |
| Production | Donald Paul Pemrick | Casting |
| Production | Dean E. Fronk | Casting |
| Production | Denise Loren | Unit Production Manager |
| Directing | Jared Briley | First Assistant Director |
| Directing | Maggie Ballard | Second Assistant Director |
| Production | Ana Menendez | Production Executive |
| Production | Fabio Varlese | Executive Producer |
| Crew | Nick Loren | Stunt Coordinator |
| Production | Kai Williams | Production Coordinator |
| Camera | Dan Anderson | Still Photographer |
| Camera | Brock Morse | Still Photographer |
| Costume & Make-Up | Critter Pierce | Costume Supervisor |
| Sound | Teddy Champion | Sound Mixer |
| Sound | Joseph Batiste | Sound Mixer |
| Directing | Tamara Hansen | Script Supervisor |
| Directing | Jane Gauthier | Assistant Director |
| Production | Salvatore Lizzio | Production Manager |
| Crew | Simone Belli | Fight Choreographer |
