I have to admit from the outset that this book just didn't do it for me as the others in the series. There was an immediate danger, suspense and poignancy about the other books that was just missing from this one. I actually had a problem getting into the book almost immediately. It just didn't hold my attention very well. At first, things were kind of confusing, and then what was happening just wasn't all that interesting at first.
I also had some problems with the characters and their connection. Jon, now living in an enclave while his family lives on the outskirts as the less desirable "grubs", just doesn't immediately seem like a likeable character. He seems to go along with whatever his friends wants, and although the author did offer the excuse for his actions that he shouldn't make waves because it might hurt his stepmother, it just wasn't enough to justify some of his actions. Although I liked Sarah, like Jon, there was just a lack of development. Their romance together was a little under-developed also, and due to some of his actions, I was surprised that Sarah even loved him.
The new society and its structure just didn't make any sense to me. It doesn't make sense that a natural disaster that nearly destroyed the world would later cause the survivors to go back to the 1800s to create a society of segregation.
All in all, I was pretty disappointed with this story and I can't really point to much that I enjoyed about it unfortunately. I love the author, love her writing, but this story didn't do it for me.