I got this book "free" with an issue of Shout magazine in August 2013. It has resided on my bookshelf until now. I'm truly not the reader I once was. 
 I like how this book starts off. I like how it continues, too, though I can't say any of the characters save for Cammie feel particularly fleshed out. The mid-section of the book brings in some bizarre pacing that I couldn't quite make sense of, and though the target audience reader would get what they wanted from it, I couldn't help feeling like crucial development was sacrificed. The whole thing is set in a seriously cool school for spies (say that five times fast, I dare you) and yet the operations of the school seem glossed over in multiple comedic anecdotes. 
 Indeed, this was destined to be a series, but I stick by my moral that each individual book should be satisfying in and of itself. Those last few pages were painful sequel bait. I can't get down with that. 
 I do like it, though I haven't the time or the space on my bookshelf to delve deeper into the world. 3.5 stars.