I found The Unbound to be a very good follow up to The Archived and I had a really hard time putting it down. I do have a couple of small complaints. One would be that Mackenzie keeps one bit of information from everyone including Wesley and Roland and there was no real reason for her to except to create drama later in the story. Another is that there just doesn't seem to be any reason for Sako to dislike her so much, or Agatha for that matter. And I also disliked that Mackenzie kept wanting to protect Wesley like he was some fragile flower. Other than those things I liked the book. and I'm looking forward to reading the third book in the trilogy.