Based on the successful book series by R.L. Stine, this spooky tale finds 11-year-old Max making a deal with the ghosts who haunt his home. If Max helps them find what was responsible for their parents' disappearance, they'll help him transform from a social nobody to the most popular kid in school.
Unfortunately the movie Mostly Ghostly is not yet available on HBO Max.
| Directing | Rich Correll | Director |
| Writing | Rich Correll | Writer |
| Writing | Pat Proft | Writer |
| Production | Lisa London | Casting |
| Art | David L. Snyder | Production Design |
| Editing | Ryan Correll | Editor |
| Production | Catherine Stroud | Casting |
| Sound | Peter Neff | Music |
| Costume & Make-Up | Bonnie Stauch | Costume Design |
| Art | Ethan Goodwin | Set Decoration |
| Art | Kelly Berry | Art Direction |
| Camera | Barry M. Wilson | Director of Photography |
| Writing | R.L. Stine | Book |
| Production | Steven Stabler | Producer |
| Production | Arthur Cohen | Producer |
| Production | Yvonne M. Bernard | Producer |
| Costume & Make-Up | Todd Tucker | Special Effects Makeup Artist |
| Production | P. Jayakumar | Producer |
