People are saying that the finale is disappointing and that it's very different from the book. Well, I think the differences are quite justified. Don't continue reading my review if you don't want any spoilers from the book.
So in the book, the girl dies. Andy sees the blood stains in Jacob's shorts. And this makes Jacob look extremely suspicious. Even though the book doesn't give a definite answer just like the show, I'm sure %95 of the readers believed that Jacob was guilty, because all the evidence lead to that conclusion.
On the other hand, the Jacob that we see here, is quite different. The girl isn't killed. There is no blood stains. We can't be totally sure. I think this ending is so powerful that it totally makes you question if he did it or not. On the other hand, I was quite sure about the fact that Jacob was the killer in the book.
Overall, the show has phenomel acting by all of the lead actors and actresses. I found Michelle Dockery's acting incredibly powerful. The soundtrack, the music and the setting are all awesome. The series has that depressing feel that you'd expect from such events. It really makes you wonder. And as I've mentioned in the beginning, it totally nails its uncertain ending.
Review of Defending Jacob
