This book reminded me of The Simpson's movie for about 20 pages. The book itself is 1065 pages. It is a fast read regardless of the size.
In short, a small mid-western town is suddenly trapped by a dome. As the dome drops, people and animals are cut into pieces landing on either side of the dome. No one can figure out where the dome came from, what it's made of or how to get rid of it.
The town trapped inside is run by a megalomaniac used car dealer who has been "saved by Jesus". Big Jim is a character that is so well written that I loathed him from the beginning and I couldn't wait for him to be killed. He is bent on taking over the town and ruling a la Pol Pot although he envisions himself an altruistic leader called by God.
Our hero is a retired veteran of the Iraq war but is the town short-order cook. He has just had an altercation with the son of the man running the town and he is NOT well liked by the powers that be in town. He is, in fact, on his way out of town when the dome appears. His former military contacts come in handy in dealing with the dome situation. It doesn't help him any with his relationship with Big Jim and his son Junior.
In just a few short days, the peaceful town is changed into a strange and stressed place where people are being murdered, committing suicide, and murdering and then committing suicide. Some people tend to loose their humanity and others become even more humane and caring of their neighbors.
This was a fascinating study of people under duress. There are many layers and so many people that it is a fun and fast read. The final scenario is weird, tense, and a final relief when the final word is read.