Somewhat disappointing. The main character - Marcus Lear - is well developed and has an excellent back-story; I liked him and how we got to know him as the book progressed. A good character. Most everyone else comes across as shallow and more of a supporting role - since some of them are going to be around in future books that's really too bad.
A lot of the conversation is stilted - it doesn't come across as how people would actually speak. I've seen the same problem in other books as well, and (for me, anyway) it interrupts the flow of the book, jarring me out of the story and back to where I'm reading a book.