Trivia: When Mattie sits in the bus just before her professor tries to put himself in its path, behind her is a bearded student, an extra. Repeated views of the films will find him a total of 3 times in 3 different scenes; first in the front school yard, and then in the bus, and one more time in a computer lab.
Trivia: This film is a remake of the scary Japanese original, Kairo, a.k.a. Pulse, which was written and directed by Kurosawa Kiyoshi.
Trivia: Anytime one of the characters click on "Do you want to meet a ghost?", they all click the "to".
