Don't read a lot of YA, but this supernatural-occult thriller sucked me in from the cover. Good believable characters, a fascinating mystery, and a pretty solid villain kept me reading, and I finished the book in two days (while I was supposed to be working on other stuff, of course). I'd've liked to see more villainy from the villain (we're told he's bad, but I prefer to see them being bad) and maybe a bit more oomph from the climax scene, but then, it did keep me reading, and reading, and reading. Had to see what happened next. We'll call it 4.0 to 4.5 stars.