What started out as a mess, ended strong.
As with previous seasons of 24, there were simply too many story lines going on, that ultimately all tied together, albeit by simply ending halfway into this season.
The 12-episode format serves this show well now, with no room for filler episodes, like the first 8 seasons.
There were moments of sheer stupidity and disbelief, but somehow they pulled it all to a good ending. The first few minutes of the finale were the best of the season.
Overall, I liked it. I hope it does return for another (mid)season. I only ask that we get some new bad guys from another region of the world.