A SELF-CONFESSED ghost hunter living in America's" most haunted city" has revealed some of her most spine-chilling encounters with those from beyond the grave.... But one night I was walking and it was eerily quiet." I got halfway down the street outside and I felt something behind me-I was so sure someone was there, I thought I was about to get mugged." I turned around and there was nothing there.... Gracie and her parents lived at the Pulaski Hotel after her father was employed as the hotel