In the Mouth of Madness (1994)

 

Directed by John Carpenter. Found on Tubi. Sam Neill, Jurgen Prochnow, David Warner, Julie Carmen, Charlton Heston, John Glover.

https://en.wikipedia.org/wiki/In_the_Mouth_of_Madness

https://www.rogerebert.com/reviews/in-the-mouth-of-madness-1995

https://www.inverse.com/entertainment/in-the-mouth-of-madness-oral-history

https://trailersfromhell.com/in-the-mouth-of-madness-4k/

https://cinephiliabeyond.org/in-the-mouth-of-madness/