First the one secret ops guy or whomever he was (the older guy) had a point about how doing nothing to the boys would be one of the worst things to inflict on them...being in a solitary room in the dark, doing absolutely nothing, same crap day after day...it can make you nuts. The same grub every day too..thought it was funny at first how Sam turned his nose up at it, but Dean seemed to really like it, lol. Also loved watching Sam work out. ;)
This is probably an unpopular opinion, but I was glad that Mary called out Cas on leaving the boys like that. That was a total WTF moment in the previous episode. Of course she later apologized to him (*sigh*) but I guess it's something that he insisted he shouldn't have left them. I admit I rolled my eyes a bit when he told her about the case he heard about on tv (that ended up being vampires), how Sam & Dean would have just gone right for it, etc. It was almost as if they were trying too hard in having him emphasize how important they are, maybe admitting how they need them, trying to atone for his action, etc. Maybe it was just clumsy execution, I don't know. I did notice though how he seems to be a really crappy hunter, lol. Mary herself ended up going there and taking care of it.
I also admit I didn't really bat an eyelash when the boys were found dead in their cells. As soon as I saw Billie's actress name in the credits I knew she had to be involved somehow. It was great seeing our boys be so badass while on the run from those secret ops guys...especially that ambush at the abandoned cabin. Then Sam tells Dean they have to talk about "it" and I started thinking "uh oh"...and that it probably had to do with Billie.
The British MOL guys get involved. I knew they weren't going to let those secret ops guys remain alive, and now it looks like Mary could be working with them? I'm curious to find out the repercussions of that.
So, the ending...Billie appears and it turned out the boys made a pact with her to get out, but it requires one of the Winchesters to die at midnight. Wow, it's easy to see just how being in that confinement for so long affected them. I pretty much expected Mary to sacrifice herself, though I felt pretty sad when she was putting the gun up to her temple and telling them "Goodbye." Then, um...Cas kills Billie? Again, unpopular opinion, but this scene kind of stuck out like a sore thumb, pretty much the same way the earlier scene of the talk between him & Mary. He starts ranting about how they're always making deals (well I guess he has a point, but still...) and how this world needs them, etc. Is this supposed to reflect his guilt? Because it seems like a pretty clumsy way to me...or heavy-handed, I can't really describe it. I just got a real "try-hard" vibe from it. Meh...maybe my opinion will change upon rewatching.
Again though I'm curious to see where Mary supposedly working with the British MOL will lead. Oh and it sucks that the CW didn't show a promo for next week's episode. Boo! :(