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 |
| Writing | Joe Lemmon | Story |
| Camera | Andrzej Sekula | Director of Photography |
| Writing | Francesco Cinquemani | Story |
| Writing | Giorgia Iannone De Sousa | Story |
| Production | Monika Bacardi | Producer |
| Production | Richard Salvatore | Executive Producer |
| Production | Giovanna Trischitta | Executive Producer |
| Sound | Tom Russbueldt | Original Music Composer |
| Sound | Aldo Shllaku | Music Producer |
| Writing | Ferdinando Dell'Omo | Screenplay |
| Production | Nat McCormick | Executive Producer |
| Writing | Jennifer Lemmon | Screenplay |
| Writing | Luca Giliberto | Screenplay |
| Writing | Francesco Cinquemani | Screenplay |
| Writing | Giorgia Iannone De Sousa | Screenplay |
| Production | Bret Saxon | Producer |
| Production | Jeff Bowler | Producer |
| Production | Danielle Maloni | Producer |
| Art | Francesco Cotone | Production Design |
| Editing | Yvan Gauthier | Editor |
| Costume & Make-Up | Lenka Padysakova | Costume Designer |
| Writing | Bob Bowersox | Screenplay |
| Production | David E. Ornston | Executive Producer |
| Art | Joe Lemmon | Production Design |
| Production | Donald Paul Pemrick | Casting |
| Production | Joe Lemmon | Producer |
| Production | Nate Adams | Executive Producer |
| Production | Galen Smith | Executive Producer |
| Production | Andrea Iervolino | Producer |
| Art | Markos Keyto | Production Design |
| Production | Luca Matrundola | Executive Producer |
| Production | Dean E. Fronk | Casting |
| Production | Marc Danon | Executive Producer |
| Directing | Maggie Ballard | Second Assistant Director |
| Production | Denise Loren | Unit Production Manager |
| Production | Ana Menendez | Production Executive |
| Production | Fabio Varlese | Executive Producer |
| Directing | Jared Briley | First Assistant Director |
| Sound | Joseph Batiste | Sound Mixer |
| Production | Kai Williams | Production Coordinator |
| Production | Salvatore Lizzio | Production Manager |
| Directing | Jane Gauthier | Assistant Director |
| Crew | Nick Loren | Stunt Coordinator |
| Costume & Make-Up | Critter Pierce | Costume Supervisor |
| Camera | Dan Anderson | Still Photographer |
| Camera | Brock Morse | Still Photographer |
| Directing | Tamara Hansen | Script Supervisor |
| Sound | Teddy Champion | Sound Mixer |
| Crew | Simone Belli | Fight Choreographer |
