Trailer
Images
 | Owen Vaccaro as Lewis Barnavelt |
 | Jack Black as Jonathan Barnavelt |
 | Cate Blanchett as Florence Zimmerman |
 | Kyle MacLachlan as Isaac Izard |
 | Renée Elise Goldsberry as Selena Izard |
 | Sunny Suljic as Tarby Corrigan |
 | Vanessa Anne Williams as Rose Rita Pottinger |
 | Colleen Camp as Mrs. Hanchett |
 | Lorenza Izzo as Mrs. Barnavelt |
 | Eli Roth as Comrade Ivan |
 | Braxton Bjerken as Woody Mingo |
 | Ricky Muse as Bus Driver |
 | Charles Green as Soda Jerk |
 | De'Jon Watts as Clark |
 | Aaron Beelner as Clown Automaton #1 |
 | Joshua Phillips as Clown Automaton #2 |
 | Christian Calloway as Azazel |
 | Caleb Lawrence as Sweet Shop Employee |
 | Dylan Gage Moore as Sweet Shop Boy |
 | Jalyn Hall as Devin |
 | Jackson T. Giles IV as Student |
 | Alli Beckman as Magician's Assistant |
| Writing | |
| Eric Kripke | Screenplay |
| John Bellairs | Novel |
Directing | |
| Eli Roth | Director |
Production | |
| Brad Fischer | Producer |
| Laeta Kalogridis | Executive Producer |
| Eric Kripke | Producer |
| W. Mark McNair | Executive Producer |
| Tracey Nyberg | Executive Producer |
| William Sherak | Executive Producer |
| James Vanderbilt | Producer |
| Nicole Abellera | Casting |
| Jeanne McCarthy | Casting |
Art | |
| Andres Cubillan | Art Direction |
| Walter P. Martishius | Art Direction |
| Ellen Brill | Set Decoration |
| Tommy Wilson | Set Decoration |
Editing | |
| Andrew S. Eisen | Editor |
| Fred Raskin | Editor |
Camera | |
| Rogier Stoffers | Director of Photography |
Sound | |
| Nathan Barr | Original Music Composer |
| Peter Staubli | Sound Designer |
| Jon Title | Sound Designer |
| Randy Torres | Sound Designer |
