Ok, the Vampire Diaries Fans, breathe. Yes, Stefan is human. Yes, Alaric wants to open a Mystic Falls school fir witches and yes, Katherine Pierce is now in charge of hell, but that's no reason to freak out. The real reason to freak out after The Vampire Diaries "It's been a hell of a ride" is this: is Katherine returning instead of Elena on The Vampire Diaries? Well, it's possible.
Nina Dobrev has confirmed her return to The Vampire Diaries series finale, but just because Dobrev is coming back doesn't necessarily mean Elena will too. What if she's not going to be playing Elena in the finale, but Katherine? After all, Katherine's return to Mystic Falls seem inevitable after this episode. Now that she's in charge of hell, she has the power to make Stefan and Damon's lives miserable, not to mention the entire world. That said, despite the absence of any explicit confirmation that Dobrev will return as Elena Gilbert, it's pretty likely that we'll see both Katherine and Elena in the series finale.