Friday the 13th

I can believe it's Friday the 13th because I had a mostly sleepless night. Every time I would fall asleep, and I mean every time, I began having nightmares...really disturbing stuff. I only remember one but it had to do with these two elderly sisters. One was seemingly normal and the other was a psycho. The "normal" one was covering for the murders of the psycho. It seems to me the psycho might have been a ghost because I remember something about a haunted house. I also remember that she looked like Joanna Lumley (Brit actress) but her teeth were filed to sharp points. Very scary. I hope the day isn't indicative of the night.