Our Vampire Diaries protagonists are in for a good old-fashioned haunting in Season 5, Episode 20 (“What Lies Beneath”). According to the official synopsis, “When Tyler turns up at the Salvatore house with the news that Markos’s plan to break the witches’ curse puts Stefan and Elena in imminent danger, Damon suggests they hide out in the remote cabin once owned by Caroline’s father. Once there ... a ghostly presence at the cabin uses violence and fire to make itself known.” Yikes! Which ghostly presence will be haunting the TVDers? We speculate below!

Caroline’s father. We haven’t given much thought to Caroline’s father since he died in Season 3 by choosing not to finish his vampire transition, but that doesn’t mean he hasn’t been paying attention to Caroline and her friends. We’re not sure if Caroline’s dad would have ended up on the Other Side, given that he didn’t technically die a supernatural, but he did have vampire blood in his system. That has to count for something, right? Plus, he’s exactly the level of jerk to haunt Caroline and co. rather than just find a nice way to say hello. Mostly, however, he’s made this list because it’s his cabin.

Tessa. If the Other Side is disintegrating, you just know super witch Tessa has something to say about it. After all, she was the one who created it millenia ago just to trap ex-boyfriend and always-stalker target Silas into a relationship. Earlier this season, after thousands of years, she finally got her wish when Silas died and passed over to the Other Side, she followed, and Amara — no longer the Anchor and therefore no longer supernatural — passed on somewhere else. Can you imagine waiting to trap a man for two thousand years, to finally have your plan work, only to have the supernatural purgatory honeymoon you’ve designed for the two of you to start disintegrating five minutes after you’ve gotten there? Yeah, us either, but you better believe Tessa is mad about it. Mad enough to try to get the TVDers attention.

Katherine. We’re not exactly sure where Katherine Pierce ended up after dying, but you can bet she’s not overjoyed to be there. With the Other Side disintegrating, is there a chance that Katherine may have a chance to get out of whatever hell she’s currently stuck in? If so, you better believe she’s going to take it, and she’s not going to pussyfoot around trying to get the TVDers attention with pottery-making scenes or eerily active rocking chairs. She’s going straight for the violence and fire.

Kol. We know Kol Mikaelson will be back in at least one Season 5 episode, chatting to Matt on the Other Side, but will his presence extend further than that? Will he also start trying to get Stefan, Damon, Elena, and Caroline’s attentions? They’re usually the ones who do the decision-making in this group, so it wouldn’t be the worst idea. If Kol is trying to get out of the Other Side, he could stand to make an alliance with worse allies, and now that he knows his family has it’s very own spin-off, he has even more to live for.

Who do you think is the ghostly presence in Season 5, Episode 20? Share your theories 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+!