A girl went back to her dorm room late one night to retrieve her books before heading over to her boyfriend's dorm to spend the night. She entered the room but knowing her roommate would be sleeping, she didn't turn on the light.
She stumbled around the room in the dark for several minutes gathering what she would need before finally leaving. The next afternoon, she came back to her room to find it surrounded by police. When asked if she lived there, she replied that she did. The police took her into the room where she discovered the mutilated body of her roommate and, written on the wall in blood, the words "Aren't you glad you didn't turn on the light?"