The Exorcist.  Those two words just strike fear into any adult that is of a particular age.  Think about those words and scenes will crash into your head.  Visions of a sweet and innocent little girl called Regan.  Visions that will soon be replaced by those of a demon infested and quickly diminishing girl.  Now quickly I realised that I was going to be scared more by the book than by the movie.  I’ve seen the movie and its probably the generation I’ve grown up in but, I have seen far worse.  The Saw Franchise or Hostel to name but a few.   The Exorcist excels at atmosphere.  The way the…