It's a very good review by author Jim Cherry. He concludes:
The horror is more implicit than explicit, there’s no big ’reveal’ scene where a monstrous nightmare vision is thrown at the reader for shock or a visceral reaction. Nickle sets the tone at early 20th century creepy. The tone is more of a pins under your skin feeling, or the feeling of a spider walking across your hand, that keeps you in a state of ecstatic uncomfortableness. The closer I got towards the end, the more it kept me reading to see how this could possibly be resolved. What higher praise or expectations can you have for a book?