Trailer
Images
 | Owen Vaccaro as Lewis Barnavelt |
 | Jack Black as Jonathan Barnavelt |
 | Cate Blanchett as Mrs. Zimmerman |
 | Kyle MacLachlan as Isaac Izard |
 | Colleen Camp as Mrs. Hanchett |
 | Sunny Suljic as Tarby Corrigan |
 | Renée Elise Goldsberry as Selena Izard |
 | Braxton Bjerken as Woody Mingo |
 | Lorenza Izzo as Lewis's Mother |
| Perla Middleton as Parent / Teacher |
 | Charles Green as Soda Jerk |
| Alli Beckman as Magicians Assistant |
| Demetri Landell as Teen Pedestrian |
 | Ricky Muse as Bus Driver |
| Van Marten as Townie |
| Jalyn Hall as Woody |
| Aaron Beelner as Automaton |
 | Chris Adams |
| Vanessa Anne Williams as Rose Rita Pottinger |
| Dylan Gage Moore as Sweet Shop Boy |
| Anela Terzic as Sweet Shop Boy's Mother |
| Garrett Strobl as Man sleeping on bus |
| Caleb Lawrence as Soda Clerk |
| Jack Giles IV as Student |
 | Eli Roth as Comrade Ivan |
| 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 |
Sound | |
| Nathan Barr | Music |
Crew | |
| Rogier Stoffers | Cinematography |
Production | |
| 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 |
