I rate this two stars for my personal taste and three and a half stars for execution. I'm not a big fan these days of supernatural thrillers.  At one time I loved this type of novel from authors like Stephen King but that was many years ago.  Michael Koryta did a great job keeping the tension and pace of this novel going strong.  It grabs you early on and never lets go. For three quarters of the story, the supernatural aspect is prevalent but not unbelievable. Then things get ridiculous.  And that is literally what I kept thinking... This is ridiculous. It just lost me and I skimmed the remainder of the book just to get done. But if a reader enjoys this type of story, they will probably enjoy the whole thing. Overall I give it three stars even though I hated the last part.