The novel features a town which is suddenly cut off from the world by a clear impenetrable dome. The inhabitants have to survive on what they have, while the outside world tries to break in and rescue them. It has the appeal of a post apocalyptic survival tale with the added angst that goes with the thought that they could all escape somehow.
I thought the ending of the novel was quite cheap and unworthy of all that had gone before. We shall see how they handle the ending if they get that far in the story.