The Duffer Brothers Finally Admit They’d Do ‘Stranger Things’ Season 2’s Most Hated Episode Completely Differently

Few shows in the Netflix era have generated as much devotion and debate as ‘Stranger Things‘, the sci-fi horror phenomenon that turned Hawkins, Indiana into one of the most beloved fictional towns in television history. After nearly a decade on air, the series wrapped its run at the start of 2026, leaving creators Matt and Ross Duffer free to reflect on every chapter of the journey with fresh eyes and, apparently, a few lingering regrets.

The Duffer Brothers have been candid in recent months about the pressures and creative decisions that shaped each season of the show. That openness came into sharp focus during a live taping of Josh Horowitz’s Happy Sad Confused podcast in Los Angeles, an hour-plus career-spanning retrospective in which the brothers didn’t hold back on everything from shutting down internet rumors to revealing secrets about the show’s ambiguous finale.

Speaking to Horowitz, the Duffers revealed that if they could go back in time, they’d love to have a “second shot” at crafting ‘The Lost Sister,’ Season 2’s seventh episode, in which Eleven travels to Chicago to meet Kali, a fellow Hawkins Lab escapee with psychic powers. The bottle episode has long been considered the weakest installment in the entire series, and the brothers now openly agree that its execution fell short of what it could have been.

Matt Duffer, speaking on the Happy Sad Confused podcast, placed the blame squarely on their own structural choices, saying the real mistake was isolating the episode rather than weaving Kali’s story more naturally throughout the season. Ross added that the two of them had become so consumed with writing and directing the final two episodes of Season 2 that the integration of Kali’s arc simply got lost in the shuffle. The candid admission is notable given that, back in 2017, the brothers had defended the episode as a necessary building block for Eleven’s emotional arc.

The conversation also gave the Duffers a chance to put a long-running fan theory to rest. For years, fans and critics had speculated that ‘The Lost Sister’ was a failed backdoor pilot for a potential spin-off series centered on Kali and her punk crew. Matt Duffer flatly denied that characterization during the podcast, calling it inaccurate and dismissing the suggestion with visible irritation. Upon its original release, the episode received generally mixed reviews from both critics and fans, with most agreeing it was the worst episode of the series up to that point, largely due to its disruption of the narrative momentum the season had been building.

Despite all of that, Kali’s story did find resolution when the character returned in the fifth and final season, ultimately helping Eleven plan her fatal sacrifice and contributing to saving the world. Whether that payoff fully redeemed the divisive detour likely depends on which side of the fandom a viewer falls on, and that debate shows no signs of settling anytime soon.

With ‘Stranger Things’ now complete and a spin-off series on the horizon, the Duffers seem to be in a reflective mood, weighing what worked and what they would approach with a different hand. ‘Stranger Things: Tales From ’85’ is currently streaming on Netflix and has already been greenlit for a second season, meaning the world of Hawkins is far from finished even as its original chapter closes.

Whether you think ‘The Lost Sister’ deserved more grace or stands as proof that even the best shows can misfire, drop your take in the comments and let the great Season 2 debate continue.