The Purge — [s9e13]

" The Purge " (Season 9, Episode 13) is a pivotal episode of Supernatural that effectively balances a bizarre "monster-of-the-week" case with the season's heavy emotional fallout between the Winchester brothers.

: Sam delivers a crushing blow, stating, "No, Dean. Under the same circumstances, I wouldn't." The Verdict [S9E13] The Purge

: Dean argues that he saved Sam because they are family, claiming Sam would do the same for him. " The Purge " (Season 9, Episode 13)

: The introduction of the Pishtaco and Dean’s hilarious "lunch lady" persona. : The introduction of the Pishtaco and Dean’s

The episode takes Dean and Sam to a high-end wellness retreat where people are losing weight at an impossible rate. The culprit—a , a parasite from Peruvian folklore—is a creative and gross addition to the show’s bestiary. The setting provides a nice touch of dark humor as Dean goes undercover as a kitchen worker (and naturally struggles with the "healthy" menu), while Sam plays the role of a fitness instructor. The Climax: A Fractured Brotherhood

While the case is entertaining, the true weight of the episode lies in its final minutes. The tension building since Dean’s decision to have Sam possessed by Gadreel without his consent finally boils over.

: The gut-wrenching realization that Sam’s trust in Dean is completely broken.