We’re still processing the epicness that was the 100th episode of The Vampire Diaries, but Mystic Falls waits for no one and we’re in for another all-new episode: Season 5, Episode 12 (“The Devil Inside”). What is newly-passengered Katherine Pierce (Nina Dobrev) up to in tonight’s episode?

The 101st episode of TVD seems poised to continue the humor, hijinks, and heartbreak the 100th episode set into action. According to this tweet from executive producer Julie Plec, “I must say, the 101st episode of #tvd is pretty damn good. Katherine is such an evil little s—t,” High praise from the TVD Power That Be who managed to create a 100th episode that managed to be both nostalgic and careen the current plot forward.

In the latter case, we’re referring of course to Katherine’s semi-possession of Elena’s hot bod. We’ll be seeing the aftereffects of the spell that made Katherine a passenger in her doppelganger’s body in tonight’s episode and it sounds like the villainess is back in fine form when it comes to screwing our fang gangers over. According to Julie, “The thing that's so great is that she's so into Stefan right now and so not into Damon right now, and yet Elena was about ready to re-embrace her relationship with Damon and Damon was all ready to win back his girl, so you can only imagine how that's going to go down,” Julie told E! Online. “Katherine does some of the bitchiest stuff as Elena in the next part of the chapter. It's great. It's Katherine at her most diabolical.”

So, bad news bears for Delena fans looking for an easy reconciliation. We may have to wait a little longer to see these two star-crossed lovers back in one others’ arms. In the meantime, we’ll have to make do with Katherine’s apparently insidious attempts to convince Elena’s loved ones she herself is Elena – and, we have to admit, we’re seriously looking forward to it. Katherine has had a lot of practice pretending to be Elena, and we’re intrigued to see how long she can keep the con going. Any wagers, TVDers?

What sorts of shenanigans do you think Katherine will get up to as Elena? And how long will she be able to fool everyone? Sound off in the comments below!

The Vampire Diaries airs Thursday nights at 8 p.m. ET on The CW.

Kayti Burt is a contributing writer for Wetpaint Entertainment with a penchant for all things pop culture. Follow her on Twitter and Google+!