I don't even know where to start with this one. But in a weird way, this reminded me of Tomorrow, When the War Began. TiNaT is a really, really tough read that has stuck with me since I finished reading it. 
 Sloane's life is hard, really hard. Her world fell apart six months ago when her sister left home, leaving her alone with their abusive, controlling father. She doesn't want to go on and is planning her suicide. Sloane's world is simply that bleak. It has one of the most intense and disturbing opening chapters I can recall, the sudden arrival of a zombie hoard thwarts her plans, and she, along with five other teenagers, find themselves thrown together, struggling to survive, when they take refuge in their high school. 
 The problem is--aside from the zombie horde banging THUD, THUD, THUD on the school's doors and windows--Sloan doesn't want to survive. Nothing has changed for her. She's still alone, she still has no reason to keep going--even less reason, really. The thing is, Sloane finds herself surviving, despite her intentions otherwise. The events that unfold are absolutely gripping, and beautifully ambiguous in Summers' trademark style. This is definitely one of my favorite reads of the year. 
 I wrote a longer review that I had every intention of posting here too, but every time I do any copy-paste, everything goes all wonky and I'm getting really annoyed... *sigh* So, I'm going to be annoying and just post a link to my long review (sorry). Here it is on Clear Eyes, Full Shelves.