Abandoned after about 150 pages. 
 The writing style just rubbed me the wrong way. The slang I think I could probably get used to, but it was more the "and then Thomas just knew" blah blah blah. All tell, no show. No connection with the characters. I wanted to know what was actually going on, but not enough to keep slogging through. So, off to find spoilers, I suppose. 
 A shame, really. The premise, secretive as it is, seems neat. And I wanted to like it. Bah. Back to the library.