* DawsonCasting: The movie features people in their mid-20s portraying 18-year-olds. Same goes for the sequels.
* WhatCouldHaveBeen: The script for the film was written by the feminist activist Rita Mae Brown as a spoof of the slasher genre. Instead, the producers had it directed as a straight horror story.
* WorkingTitle: The script that the film was based on was called ''Don't Open the Door''.