Luther season 4

Last season seems to be the best - probably because of the closure it gives (sort of).

I'm still not happy that his... vigilante ways were never really punished, despite the last episode's main theme, just like I'm not happy with Alice as a character. For Alice, lot of her decisions are questionable to me in the light of her... predispositions. For Justin, I'm sad to see the punishments rained upon him, for all his attempts to do the right thing. I wish Mary was a more complex character, too. 

But overall, I'm satisfied.