Trivia: In the scene where Alice finds Bill's body hanging on the back of the door to the generator room, the producers purposely did not tell Adrianne King what they were going to do to the body nor did they let her see the body beforehand. When she saw the body during filming it was for the first time. The scream she produced was genuine as it scared her badly. Needless to say, that entire scene was shot in one take.
Trivia: The director, and several other crew members were arrested after the film premiered, because authorities believed that the footage in the film was real, and that the actors were really dead. The director eventually had to present the actors to police to clear his name, and had to demonstrate how some of the gore effects (such as the impalement) were achieved.
Trivia: When Father Malone discovers the journal, at the beginning of the movie, he opens it to a full page of text. We only see it very briefly but if you pause the film it appears to be some sort of joke. Here's a couple of extracts I could make out: "writing dumb shit in this fucking movie.." "...big tits, tatoos (sic)..." (00:06:41)