My feelings towards this book are fairly mixed. I loved the background. The idea that a bunch of people building an underground society where astrology is revered as a religion, is very strong. The society itself is fascinating with more than a few hints of dystopia and I quite liked the way it worked. There's also Astrea's desire to rule her own life and the fascinating hints of the other worlds. I also loved Lexan.
However several points really lowered the score of this book for me. The obligatory love triangle; the fact that Astrea was well trained in combat but totally inept when it came to do anything; the whiny voice of Astrea and her total inability to mature.
I liked the book enough to keep reading the series, but I did skim certain points. Good background, great potential but frustrating main character.