Argh! What a frustrating story! This series has been enjoyable enough to keep my interest and keep me reading, and I really liked the first 90% of this installment. I couldn't wait to find out what was going to happen to Sinclair and Jackson and find out what was the big secret he carried around that prevented him from communicating with her. I could hardly believe it when I got to "The End" and that important character development piece was just omitted from the story. That last 10% had so much potential, too. Disappointing ending. Might keep me from finishing this series.