Other mistake: The narrator says that the train stopped to let the train filled with Christmas carolers go by, but the train passed after the train had already crossed the tracks, so there was no need to wait. (00:19:30)
Other mistake: A group of students poses as painters so they can investigate shady doings at A.J. Arno's home. They had made a work order which included their dormitory's phone number. When Arno calls the number, he asks, "Is this 247-8824?" A student says "Yes" but the number on the phone dial is "471249624."