Well written SS. I enjoyed it, but over so fast so i'm only giving it 4 stars. I'm not sure what to make of it. They didn't find any reason to the cold or the singing. Who knows, whether it was tech or a ghost. Not too far a stretch for it to be a ghost with all the sensitives in the series, perhaps it will follow that line down the road.Anyways now i wanna read the next book and see what path it takes. Either way its bound to be a real treat.