Tensions rise within an asbestos cleaning crew as they work in an abandoned mental hospital with a horrific past that seems to be coming back.
Unfortunately the movie Session 9 is not yet available on HBO Max.
| Production | David Collins | Producer |
| Production | John Sloss | Executive Producer |
| Directing | Brad Anderson | Director |
| Production | Dorothy Aufiero | Producer |
| Editing | Brad Anderson | Editor |
| Production | Michael Williams | Producer |
| Sound | Climax Golden Twins | Original Music Composer |
| Camera | Uta Briesewitz | Director of Photography |
| Writing | Brad Anderson | Screenplay |
| Writing | Stephen Gevedon | Screenplay |
| Production | Georgianne Walken | Casting |
| Costume & Make-Up | Aimee McCue | Costume Design |
| Art | Roger Danchik | Art Direction |
| Production | Sheila Jaffe | Casting |
| Art | Sophie Carlhian | Production Design |
| Camera | Claire Folger | Still Photographer |
| Sound | Barry Cole | Music Supervisor |
| Sound | Jason George | Supervising Sound Editor |
| Sound | William Smith | Sound Re-Recording Mixer |
| Sound | Johanna Turner | Sound Effects Editor |
| Sound | Carrie Lisonbee | Sound Effects Editor |
| Sound | Michael Mullane | Sound Effects Editor |
| Directing | Kelly Cronin | Script Supervisor |
| Sound | Jeremy Raub | Music Editor |
| Sound | Javier Bennassar | Sound Effects Editor |
| Production | Karen Corsica | Production Coordinator |
| Sound | Christopher Covert | Music Supervisor |
| Sound | Derek Marcil | Sound Re-Recording Mixer |
| Costume & Make-Up | Todd Kleitsch | Key Makeup Artist |
| Visual Effects | Marilyn Nave | Visual Effects Coordinator |
| Lighting | Mike Hadley | Electrician |
| Lighting | Dan Hutchinson | Electrician |
| Lighting | Lon Caracappa | Rigging Gaffer |
| Lighting | Karine Albano | Best Boy Electric |
| Costume & Make-Up | Jerry DeCarlo | Hairstylist |
| Lighting | Evans Brown | Gaffer |
| Lighting | Chris Nickerson | Electrician |
| Camera | Colin Hudson | Steadicam Operator |
| Visual Effects | Peter Kuran | Visual Effects Supervisor |
| Camera | Joseph Christofori | First Assistant Camera |
| Costume & Make-Up | Tricia Heine | Makeup Artist |
| Lighting | Bob Coleman | Electrician |
| Crew | Jennifer Malone | Unit Publicist |
| Art | Manya Cetlin | Art Department Coordinator |
| Camera | Charles Papert | Steadicam Operator |
| Production | Nancy Doyle | Local Casting |
| Art | Theodore Suchecki | Construction Coordinator |
| Sound | Robert Getty | ADR Editor |
| Camera | John Althoff | Dolly Grip |
| Camera | Woody Bell | Key Grip |
| Lighting | William L. Flanagan | Rigging Grip |
| Crew | Ann Pankonin | Craft Service |
| Costume & Make-Up | Elizabeth Cecchini | Hairstylist |
| Production | Katharina Eggmann | Casting Associate |
| Editing | Ian B. Wile | Assistant Editor |
| Costume & Make-Up | Joe Rossi | Makeup Artist |
| Crew | James D. Hurd | Propmaker |
| Lighting | Michael Peterson | Electrician |
| Art | Jay Heyman | Property Master |
| Lighting | Rachelle Fankhauser | Electrician |
| Lighting | Dave Cambria | Rigging Gaffer |
| Production | Maura Tighe | Local Casting |
| Sound | Michael Hertlein | Dialogue Editor |
| Sound | Robert Getty | Dialogue Editor |
| Sound | Tom Williams | Sound Mixer |
| Editing | Steven Hathaway | Assistant Editor |
