The horror in this book is a building sense of fear of what is out there in the storm. It's not gory horror, but it can make the hairs stand up on the back of your neck, particularly if you're alone during a power failure or snowstorm.
I enjoyed the book, but found some problems with the presentation. There were a great many characters. The author tries to give the feeling of a small town caught in a terrifying situation. It works well in the opening chapters, but bogs down in the middle when the second storm is approaching, and the author tries to bring the us up to date on the characters lives during the past twelve years. The ending, however, is eerie and frightening.
If you enjoy horror stories you'll like this one. But if you really want to feel the full impact, I suggest reading it at night during a snow storm.
I reviewed this book for Net Galley.