well this episode was really good. we see again charlie who has come back from Oz but she has two versions a good version and a bad version.  This is because of something that happened to Oz and bad Charlie is a badass who killa people that have killed their parents on that accident when she was young. Dean is still with the mark but he fights it a lot but I think that we are losing him slowly which is pretty sad anyway the episode was pretty awesome go see it