I'm sad to write that I was disappointed with Unseen. It lacked the excitement and adventure of the first two books. The attraction between Luis and Cassiel was missing; they almost seemed to be going through the motions. I was extremely annoyed with Luis's reaction to the task that Cassiel had assigned herself. He didn't have to like it or agree with her, but he should have supported her decision. It's not like he didn't know the reason she was placed on earth as a human. The last fifty pages were interesting but it didn't make up for the rest of the story.