Poltergeist - Kat Richardson I was hoping in the second book that the “greywalker” ability would start getting cool. Unfortunately it didn’t. Maybe I’m expecting Urban Fantasy - while this seems to read more like a mystery to me. I really want to find out what happens to Harper's ability (embrace it already), I just don’t want it to take 4 books to do so. I don't think I'll be continue the series.