This was an unexpected episode in all the best ways – truly a solid, stand-alone episode. What appeared to be another MOTW storyline came to be an emotionally driven story about, not just brothers and family, but loss, the quest for vengeance that drives hunters so often and the costs of achieving it.
Green-Eyed Monster

The storyline of the creatures, their 27-year timeline, incubating eggs, underground caverns…well, it wasn’t the best of the monsters Sam and Dean have fought over the years and really, the backstory of these creatures was a tad lacking. Apparently, they mostly stick to Mexico and wandered over one day? They don’t really choose victims based on any common parameters, other than convenience, and though they infect hosts by crawling in their mouths – they breed through human sex and then the “babies” incubate for decades in dead human women? I realize this is a TV show, but it’s a weak monster, in my opinion. Especially given how simple they were to kill in the end.

Brothers and Bonds

When we first meet Jesse as a young boy who loves his older brother Matty, their bond is indisputable. The protection, the unconditional love, the desire to take baby brother away from small town prejudices – it’s all very well conveyed – and their relationship, even in the few short minutes the audience is privy to it, is concrete; very Sam and Dean-esque. This makes the loss of big brother that much more tragic, despite our short connection with Matty.

Watching Jesse and Sam pair up and Dean and Cesar seemed to offer them each some insight and self-reflection: of course they’ve each lost a brother (never mind that they’ve regained each other) and done things motivated by vengeance, understanding very well Jesse’s motivations. They’ve also seen how loss and drive to hunt the thing responsible for it can harden a hunter and cost him a lot over years with that mission focus. It was a good opportunity for each and probably holds some foreshadowing, maybe not just in Sam and Dean’s own relationships, but about Dean’s drive to find/rescue Cas as well.
Reflections

The young loss of Matty as well as the retirement of Jesse and Cesar offered reflection opportunities for Sam and Dean. Standing at the funeral pyre for Matty, Sam offered to Dean that when he was young, he used to worry about John and Dean being dead and having no idea what to do. Dead didn’t really know what to do with this, besides return that they always came back. Both of them seemed to be acknowledging how lucky they were, then and now, that both of them are still (or again) alive.
Sibling Bond vs Revenge Drive
This episode was ripe with subtext about both the Winchesters and over all sibling bonds and revenge-driven actions, how can it not relate to the overall season plot?

“…how many hunters have you seen over the years get their revenge?...and they are never fixed…But you gotta help him get that revenge anyway.”
The applications of this philosophizing are vast in the Supernatural world, so what kind of foreshadowing are we looking at, ultimately? Are we talking about our favourite feuding sibs – Amara and God? Will Amara need to achieve some “revenge” against her brother for perceived injustices he’s committed?
Final Thoughts

What are your thoughts?