Towards the end of the movie in the Campus Security office it is revealed that five students are missing. The missing person report for the last person (Nancy McCauley) is being filled out during Alex's visit. Therefore, there should be four files in the missing person folder that Alex flips through, yet there are only three; Swanson, Holmes, and Wallace. Moreover, when Susan discovers the bodies in Gersh's closet there are only three instead of five.