I nearly stopped reading this book about halfway through. The action was slow and the characters largely flat despite the fact that most of the book is spent inside their heads. I also didn't get into the style. Each chapter was written from a different character's perspective. Had their voices been appreciably different, this could have served to build tension, but as it was, I found the switch of perspectives slowed the action rather than propelling it forward. Most of the sentences in this book were either run-ons or fragments. I don't mind either used sparingly for effect or as part of the voice of an individual character, but as something that was used incessantly throughout the novel, I just found it wearying to have to dissect one long, drawn-out sentence after another. 
 I ended up finishing the book because, by nature, I have difficulty putting a novel down once I've started it. The ending was decent, but things sort of came together in a rush after so much grueling exposition.