I didn't like this episode. There was almost nothing about it that drew me in. I feel like we're moving farther and farther away from the key elements I was hoping to get out of this season. Namely, I was looking forward to Damon and Stefan's relationship, but there were other things too. Let's take a look at this episode, and its unfortunately large number of flaws.
Cons:
Stefan and Caroline. I really do like the idea of them together, but this week's plot thread was just too silly. Because Damon hasn't given up Oscar to Lily, the dynamic Heretic lesbian duo of Mary Louise and Nora show up to Whitmore to wreak havoc. They tell Damon and Stefan that they will kill one Whitmore student per hour until Oscar is delivered to them. This causes Stefan and Caroline to think up distractions - namely, a big Halloween party, with costumes included. For a show that does a lot of big dances and events, this was a flimsy excuse at best. Stefan and Caroline making flirty eyes with each other while so many people were in real danger was a little hard to swallow. Of course, the vervaine curse on Caroline's skin means that there's lots of mounting sexual tension. They can't touch until one of the Heretics syphons away the curse. They trick Mary Louis and Nora into doing so, and then immediately fall into bed together. Okay... like, I know that Stefan and Caroline are a thing and we're all happy about it, but do they honestly not care about all the other crap that's going on? What about all the dead folks in Mystic Falls? You'd think Stefan would at least want to confirm that Elena really had been returned to Damon, too. I don't know... to me, these two came across as really selfish in this episode, and that's not something I'd normally associate either one of them with. On top of that, Caroline's stupid insecurities about Stefan's old flame Valerie continue to irk me. That whole plot thread is stupid.