Adrienne Barbeau (Adult Christine) used the same wig she wore in Swamp Thing (1982).
The dog was only available for two days of shooting, which is why he appears sporadically throughout the film.
Mo was supposed to be a photographer and even wears a camera around her neck throughout the film. All shots of her using the camera were cut.
Leftover sets from Leprechaun 5: In the Hood (2000) were used to film scenes inside the convent.
The location used as Christine's house was actually across the street from the location used for the sorority house.