Hank & Marie knows.
I kind of felt for Hank cause he told Marie once he does tell the DEA that Walt is Heisenberg, he's going to lose his job which is true. And Walt's cancer is back (oh the timing!) so he's kind of on the clock to catch him otherwise, he dies and he doesn't catch him.
I kind of miss Jesse this season. Ever since he got out of the meth trade, there was little of him and more of him moping around (understandably). I'm so annoyed at Lydia.
I felt distracted with the actress' accent so I google-d her and lo and behold, she's Scottish.