This was on okay book. I think first and foremost, the relationship between Chris and Claire didn't work for me. She was supposed to be untrusting and she leaped straight in with Chris. Then they were too dependent on each other. I think ultimately it was always being set up for them to fail, even without knowing anything about the rest of the series.
Like I said, this was an okay book, not one I'm particularly taken with and won't be continuing on with the series.