Director and co-writer Joshua John Miller said that his main inspiration for this film came from the stories his father Jason Miller told him about working on the famous 1973 horror film 'The Exorcist', in which he played the role of Karras' father.
Miller co-wrote the script with his pal M.A. Fortin, with whom they had already worked together on the ironic slasher 'Last Girls' (2015), which attempted to deconstruct the genre, and the two also developed the basic idea of writing the pilot episode for the popular TV series 'Queen of the South' (2016 - 2021).
Miller and Fortin's text got the interest of Kevin Williamson, screenwriter of the very same 'Scream' (1996), who put it into production at his company Outerbanks Entertainment with financial backing from Miramax Studios. The official budget amounted to a pretty solid $22 million.
The main filming took place from November to December 2019, then, after test screenings, it was decided to reshoot some of the material, but due to the COVID pandemic and Crowe's employment on the set of 'The Vatican Exorcist' (2023), this process and subsequent post-production dragged on for a long 5 years. And this had a very bad effect on the perception of his audience and critics - just a year after the release of 'The Vatican Exorcist', for which Crowe was nominated for the worst male role, to take the actor seriously in another movie about exorcism was quite difficult, and even when it was officially announced that the 'Vatican Exorcist' launched in the work of the sequel, and not one, but two at once. So Crowe the Exorcist has become something of a meme.
This is not a horror movie and not a movie about exorcism in its usual sense, and if someone will perceive from the point of view of genre movies will invariably be disappointed. Yes, there are good individual scenes, nice cinematic picture with well-transmitted atmosphere, there are references to classics, good special effects, but all this does not work as a classic horror.
It tells a completely different story - a story about redemption, about exorcising the psychic 'demons' that have poisoned the life of the protagonist since childhood, and all the scary scenes are metaphorical and that's why they are sometimes ignored by others and reacted to in a very illogical way from the point of view of the usual narrative.