In a 2019 interview with But Why Tho?, Zak Hilditch spoke about his inspirations for the film: "Stephen King 's DNA is running all throughout this movie. My best pitch for it is basically, 'Based on a Stephen King novel that Stephen King never wrote'. And that was sort of the vibe I was going into it with after my previous film, which WAS a Stephen King adaptation, 1922 (2017). I was in sort of that King zone of just really loving his writing and how he just burrows under the skin of his characters, and this really to me is very much inspired by King, it's inspired by The Twilight Zone (1959)... Ordinary people caught in extraordinary situations. That's stuff I really like exploring."
Appy Pratt's debut.