There is an urban legend that I read called "Aren't you glad you didn't turn on the lights". This is about two girls who are in college. These girls are also very close, they do everything together. One day in class one of them got invited to a party by the cutest boy in college. So of course the girl decided she was going to go, the other girl decided it would be better to stay home and study for the midterm coming up in their class. The other girl kept trying to convince her to go, but she wasn't up for it. So she left for the party leaving her friend to her studies. She came back to the dorm but dint turn on the light for her room mate was sleeping. The next morning she found her face first in her books dead, with a note in blood on the wall saying "aren't you glad you didn't turn on the lights.