Part creepy ghost story, part Lovecraft style nightmare, part sci-fi monster romp, with a strong message against technology that loses sight of humanity. The monsters, and there were plenty of them in all shapes and sizes, were nasty, deadly, and creatively imagined. The plot and structure were tight and propelled toward the finale. The characters were well drawn and acted in a very realistic fashion. Koontz even managed to fit in a couple of Golden Retrievers (all Dean Koontz books must have a good dog in there somewhere) before it was all said and done.
What is not to like with this novel? Nothing. Well written, compelling, and fun. Nothing wrong with that.