The script was based on two short stories by H.P. Lovecraft, "The Book" and "The Descendant." These stories were left incomplete at the time of Lovecraft's death so director James Raynor combined them into a single screenplay. At the behest of the Northern Film School (which doesn't allow directors to write on their projects), 'Richard Ellis' re-adapted the stories into a new script. Raynor then took this draft and did a rewrite without the film school's knowledge.
The demon make-up took 3 hours to apply, since it was applied to the actors' full body.