Things are starting to heat up now. Sam and Dean managed to track down Amara-- or did she track them down? That power outage in Atlantic City seemed a little bit convenient, and she did appear to them before they hit heavy traffic. And then, after offering token resistance, she agreed to think about aiding them in offing Chuck. Of course, the truth is that the boys plan to kill her, too-- and, even though Dean promised that he would never lie to her, how could she not know that? She made a point of clarifying her and Chuck's origin, revealing that they are twins, and rubbing it in that they are vastly more than they appear. Which once again raises the question of how they even have a chance against Chuck, and how can he not know what they are doing and thinking at every second? I still think that there's a strong possibility that this is either a test or the Chuck and Amara in this storyline are phonies.
The interesting thing about this episode is that one of the plots was completely mainstream-- the villain of the piece was an entirely human serial killer. But then there was that little twist at the end when the cop that took her away turned out to be the bored Crossroads Demon. Was this just a humorous turn, or foreshadowing? Will the psycho girl somehow figure into the Apocalyptic Battle?
And finally, Cass now knows that Jack will not survive the Final Battle, and so he is heading out to find another way. It seems a little late for that. But what exactly was he about to tell Dean? Was he going to share Jack's confession, or is it something else? Cass said that he's not going to watch Jack die again, so perhaps it's Cass who won't survive the conclusion.