First of all, I have to admit that I have high expectations for the book, probably because of all those glowing reviews out there and the mystifying cover. However, I find myself strangely disappointed by the book in some way. 
 The book is narrated through the two main protagonists - Waverly and Kieran. Ordinarily, I'd have loved to see the events unfolding through different POV. But this technique falls flat in Glow. Incidents are not told thoroughly enough and sometimes I feel as if I'd missed some parts of the story. Another thing I don't quite like is the building of character. Or lack thereof. Waverly seems to be pretty indecisive and fickle throughout the book while Kieran... Well, let's just say I can't figure out whether Kieran is the 'good guy' or not. In the first half of the book, we can see Kieran growing stronger and becoming a better leader. But the second half suddenly turns gears and Kieran is revealed to be slowly transforming into an idealistic cult leader. (shudder) This leaves me nonplussed and frustrated, especially since I was rooting for Kieran from the start. 
 Okay, enough with the bad stuff. Some may treat Glow as a mere science fiction, but when you look close enough, you can see that Glow actually explores deep, philosophical questions and the blurry line between good and evil. For example, what are you willing to do to ensure the survival of your crew? What lines are you willing to cross? And is posing as a representative of God a good thing if it gives your friends hope? Or is it just plain evil? Hm... Glow sure got me thinking about all these, leading me to explore the depths of humanity. (By the way, am I going too deep here?) 
 All in all, Glow is a nice enough book with enough twists to keep readers interested. Although the flow may not be smooth in all places, the way the book combines the darker and lighter elements of humans will leave readers pondering on the lengths we are willing to go to survive.