Greetings from Lithuania.
So after seeing season 3 finale "The Source" i can safely say that this was hands down the most optimistic, good feel and just a joy to watch episode almost without a trace of the most closes companion of "Rectify" - sadness. No further spoilers.
Everything worked in this episode as good as it could, and as good as it always have been in this great and criminally underrated series. Story did moved forward, with some highly satisfying conclusions (as it seem yet), but of course there is still a season 4 to witch i looking forward to see with highest anticipation possible now. "The Source" could have ended the series as well, although not everything is done in here yet, but it just felt... correct (as much as it possible could have been given the circumstances).
Overall, terrific script, great directing and acting and amazing (once and once again) score makes this episode one of my favorite yet and superbly closes season 3. Can't wait to see the final chapter of this fascinating show.