The Bottle Episode Blindspot: What the Duffer Brothers' Regret Reveals About Stranger Things The Stranger Things finale may still be sparking heated debates among fans, but it's not the episode that left the Duffer brothers wishing they could do over.
Instead, their gaze is fixed on "The Lost Sister," a bottle episode from Season 2.
This decision to revisit an earlier season seems unusual at first, especially since the Duffers are not criticizing the concept of bottle episodes in general.