I thought tonight's episode was the best of the season so far. All of the mythology boiled down to very personal stakes for all of the main characters. I love the evolution Allison's father has undergone over the course of the show, and I loved the little group therapy session between the parents in the root cellar. It's a nice reminder that this is the rare teen show where the parents are present, fairly intelligent and generally responsible. I loved Peter Hale acting as both angel and devil on Derek's shoulders as he weighed whether to save his sister or let her die for the greater good.
I loved loved LOVED the kiss between Stiles and Lydia. Both because it's an earned moment after two and a half seasons of build-up, and because the execution was pitch-perfect. So often, the nerdy guy gets the kiss from the popular girl out of pity or charity. This wasn't that kind of kiss at all; Stiles needed her to do something, and that's what she could think of. Because he's a major part of her life now, and she cares what happens to him. And then, having done it, she's quite surprised to discover that there's something there. And suddenly she's feeling a little awkward around him for the moment. Just a great little dance from the two quirkiest performers on the show.
And then that's reflected at the end when the children find themselves called upon to save the lives of their parents. The veternarian, who really hasdeveloped a bond with Scott, is the meaningful person to bring him back. Isaac, the good guy perennial also-ran whose been reluctantly moving into Scott's old territory, is Allison's meaningful person to bring her back. And Stiles? Well, that's Lydia of course.
I love that it's not a show about sex, it's a show about real emotional involvement. Even when the mythology starts to get convoluted, you always know exactly who each of these characters are, what they're feeling and why.