This is how I had hoped the last season would have ended, with a worthy showdown between Reddington and Berlin. In hindsight, I'm glad that they took the time to unveil more information about what happened between the two and therewith stretching it to the next season.
It also progresses the overall story by switching the scope of the series to a new enemy - one that has been hinted in previous episodes, sadly accompanied by the loss of one of the best side characters in the show so far. But then again, this loss went hand in hand with a very touching and powerful scene.
So far, this has been a strong season, with a lot of very different, yet equally amazing episodes in a row. Chapeau!