In the film, the works of Sutter Cane are occasionally quoted. Most if not all of these quotes are actually taken directly from several H.P. Lovecraft short stories with some adaptations to fit them into the film story. Most notably, in the scene where Styles reads to Trent as he gazes into the abyss--her speech lifts much of its description, including such elements as "the illimitable gulf of the unknown" from the last few paragraphs of Lovecraft's "The Rats in the Walls." In an earlier scene as well, Trent reads a line verbatim from Lovecraft's "The Haunter of the Dark," in reference to the black church being "the seat of an evil older than mankind and wider than the known universe."
Hobb is an old word which was used to refer to the devil.
This is the third film in what John Carpenter has called his Apocalypse Trilogy, the first being The Thing (1982) and the second being Prince of Darkness (1987).
The car keys that Julie Carmen swallows when Sam Neill is trying to escape from town were made out of pasta.