Okay, like a lot of other people I have a series of serious issues (intended) with this episode! HOWEVER.. they've been listed and explained carefully in a bunch of other reviews, so I won't bother.
I just wanna say one thing; can we get over this whole "the episode is sexist" thing? Why, because a female hunter dies? Cause Mary is brainwashed and is a woman? How about the male hunter that dies? Or the fact that the leader of the BMOL is a woman? Or the fact that Lady Bevell is unharmed throughout the entire episode? Come on man, Dean would have normally pummeled someone bloody for the things she said in the car! Frankly I wish he had..