This book was as equally well written as Enclave. The problem with middle books is that they either feel rushed, leaving too many threads dangling, or they are poorly paced, stretching out the storyline which should have been in only two books in the first place. This is where Ann Aguirre has triumphed. Although this is a middle book, it has a plot that stands on its own two *metaphorical* feet, and the pacing is steady. 
 This book takes place entirely above ground, which made me a little sad. I miss the excitement and terror of the tunnels. I also miss the Freaks from book one, their mindless attacking and feeding providing a sense of unpredictability. Now that the Freaks are adapting, they feel a little less scary to me, and I am too easily able to empathize with them. This leaves me feeling uneasy, which is also the sign of a great author. 
 Well done, overall. Now, how am I supposed to wait for the sequel??