The show is taking a bit of a beating on iMDB. People saying it started to decline at episode 5, and that the final episode was a disaster. I know reasons why they are bashing it, but I still think it's a great show. It came out of nowhere, with no hype, and within 3 weeks had millions of people speculating about the killer(s), and marveling at the atmospherics of it all. That says a lot. As does the fact that HBO Go crashed last night, lol.
I enjoyed the final episode, the chase through that old jail maze was very tense stuff. The ending was a bit hokey, considering how dark and brooding the show was all along. It wasn't the tidiest of closures, but I'm not too fussed about it. The journey along the way was where it was most fun to watch.
B+