It is probably the weakest seasons of the three I've seen so far, lots of times I was thinking what point are they trying to make. For one, the main character is exorcising his demons, like in the previous season. So it's not pointless. I like Matt Bomer and in that series he's a bit more interesting than most of his other ones. His character is definitely asking the right questions about the purpose of life, I think it is good that the supernatural mood is taking a back seat.
Would it blasphemous of me to say it reminds me of 'Heat'? In the end the cop has to put away the criminal. He doesn't like it because they're almost friends. They're both alone in the world, except for the one moment when one of them dies and the other hold his hand until the end.