Really enjoyed this. I liked how we got into the story from the very beginning. A little scary - because really, who wouldn't be slightly freaked out that a misty, swirly force that tries to kill someone in broad daylight and only you can see said mist? and then some invisible force that's coming at you and all you can see is the wet footprints it leaves behind?... exactly.Add in a cute boy that is charming and serious, a reluctant heroine that learns a lot from said boy and grows because of him (in my opinion), and a great, loyal, fun best friend, and I thought it was rather captivating and different from the usual paranormal books out there.