★★★☆☆ This is sort of hard to review. On one hand, I read it in basically one sitting, but it is fairly short so that doesn't mean much. I liked the mystery element, but found the actual ending to be... stupid? Like, Extras ending level of stupid ~it was all just a misunderstanding!~ kind of stupid that frankly pisses me off. The world was pretty cool (until the literal big reveal) and idk something about Cal just screamed "I'M A SELF INSERT CHARACTER FOR SCOTT WESTERFELD" I mean, they're both Texans in New York, they're both boys for one thing, and I've never met Scott Westerfeld, but I've read a crap ton of his books, and after a while, the author's personality bleeds through. Cal's a self insert character if I ever read one, and that's pretty disappointing because I wanted more normal guys as YA protagonists. Also, he was half assertive cool guy, half nerdy loser, and that's an annoying combination. Lace was really a...