The build up was great in the first-half of the season finale. Adrian's clearly being targeted for a murder by a local sheriff, and he's in some serious trouble. Then to give him and Leland time to figure everything out, they concoct a plan to "kill" Adrian.
All of that went very well. Nobody really suspected anything was up, which led for some interesting scenes between Leland and Natalie. Her reactions seemed perfect (no over-acting), but at the same time, they didn't make a whole lot of sense. Natalie has only known Adrian for a short period of time, and yet she seems as distraught as a wife would react. The acting was believable, but not the story aspect.
As soon as Natalie learned Adrian was alive, I knew exactly how the episode was going to end.
Adrian really hasn't had many arch enemies. It's something that's always been missing in the series, but the closest there is is Dale the Whale and he made a re-appearance in the finale. He's actually a great villain. He's wealthy and obviously still has plenty of connections to the outside (of prison).
Whether or not Dale will be back is uncertain, but it's hard to overlook the fact that the ending seemed rather final. Dale didn't seem willing to part with any information he may have on "the judge," so he may not be back.
The story was pretty good, but I need to point out that Adrian did save the governor's life. The question is will the governor do anything to reward him. I seriously doubt it. And that's unfortunate. He saved the man's life; re-instate him or at least begin that process.
With season seven officially announced, it's likely going to be the final season. At that time, I figure the writers will finally wrap up the Trudy murder mythology and bring the series to a proper conclusion.