Niets is wat het lijkt in de wereld van de verzekeringsinspecteur John Trent. Zeker niet nadat hij wordt ingeschakeld om de verdwijning van schrijver Sutter Cane, wiens horrorboeken geleidelijk aan tot een massahysterie zijn gaan leiden, te onderzoeken.
Nee, helaas is In the Mouth of Madness nog niet beschikbaar op Netflix in Nederland.
| Directing | John Carpenter | Director |
| Writing | Michael De Luca | Screenplay |
| Production | Sandy King | Producer |
| Sound | John Carpenter | Original Music Composer |
| Sound | Jim Lang | Original Music Composer |
| Camera | Gary B. Kibbe | Director of Photography |
| Editing | Edward A. Warschilka | Editor |
| Art | Elinor Rose Galbraith | Set Decoration |
| Visual Effects | Rob Coleman | Animation |
| Production | Michael De Luca | Executive Producer |
| Production | Artist W. Robinson | Associate Producer |
| Art | Jeff Ginn | Production Design |
| Art | Peter Grundy | Art Direction |
| Costume & Make-Up | Robin Michel Bush | Costume Design |
| Crew | Jeff Imada | Stunt Coordinator |
| Crew | Alison Reid | Stunts |
| Crew | Shelley Cook | Stunts |
| Costume & Make-Up | Donald Mowat | Makeup Artist |
| Costume & Make-Up | James D. Brown | Hairstylist |
| Directing | Adam Druxman | Second Assistant Director |
| Directing | Artist W. Robinson | First Assistant Director |
| Directing | Stuart Williams | Second Second Assistant Director |
| Sound | Ron Bartlett | Sound Effects Editor |
| Sound | Jeff Courtie | Foley Mixer |
| Sound | John Dunn | Supervising Sound Editor |
| Sound | Donald Flick | Sound Editor |
| Sound | Larry Hoki | Sound Recordist |
| Sound | Owen Langevin | Sound Mixer |
| Sound | Matthew C. May | Sound Editor |
| Sound | Ken S. Polk | Sound Re-Recording Mixer |
| Sound | John Pospisil | Sound Designer |
| Sound | Robert Thirlwell | Sound Re-Recording Mixer |
| Production | Brian Campbell | Location Manager |
| Crew | Danny Lima | Stunts |
