I'd give this 3.5 stars rounded up, as it's the one which caught my attention enough to decide to continue with the series.
I like both Seth and Conner, and it was nice to see them *finally* communicate (though it came far too late in the story for my taste). Still, the plot was interesting, Seth's family was horrible (and yet still had realistic tones to them), and I like how Seth and Conner built their relationship.
As with the other books, the writing here isn't great (as far as mechanics go) -- misused words, misused apostrophes, weak sentence structures, and so on.
Still, this book definitely pulled me into the world enough that I will continue.