This book was too cool for school! It reminded me of so many great stories. (As current YA/fantasy tends to do these days, they all seem to borrow from each other.) There are hints of Ender's Game, Wool, Game of Thrones, Hunger Games and, a more recent novel, An Ember in the Ashes (which I also loved). Yet, Brown has a very distinct voice. The world building, imagery, and emotional heft of this David vs Goliath themed story is STRONG. The high drama that unfolds around our hero Darrow (which must be a nod to Clarence Darrow, methinks) of the low mining class on Mars (the Reds), working to infiltrate the highest class of politicians and military leaders (the Golds) was edge of my seat stuff. I'm so glad I picked it up after the entire trilogy has been published, so that I don't need to wait terribly long to burn through the set.