- Lexicon - Max Barry
Wow. Once in a while a book comes up and unexpectedly whacks you, and this is it. Great story, and the writing isn't bad, either. It starts out a little weird and garbled but then everything falls into place and you find yourself reading under the sheets at 2 AM because you just have to keep going 
I will not say anything more about this book so as not to ruin the pleasure of discovering it but suffice it to say that it is an intelligent book woven together from neurology, linguistics, psychology, mind control, even a bit of witchcraft (controlling people with ancient incantations), short questionnaires on Facebook asking your favourite colour etc.
Highly recommended. Please read it. I suspect that it will pull the rug out from under those of you who have been reading Harry Potter and other YA fantasy/sci-fi stuff like Delirium, Divergent, etc and convincing yourselves that they are for adults, too 