"The Vampire Diaries" is setting itself up to end on a bang -- and thanks to Bonnie's (Kat Graham) grief-filled scream that echoed as she clutched Enzo's (Michael Malarkey) dead body, it's going to be a pretty hellish one.

At first it was hard to determine what exactly happened when that burst of psychic energy left Bonnie's body, but luckily Abby Bennett (Persia White) was around to fill us in: Bonnie opened a door to to Cade's (Wole Parks) hell, tying her and Enzo together. Seeing as Abby's always been a little skittish about dark magic and alternate dimensions (understandably), she burned Enzo's body to break that connection and close the door.

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Unfortunately, we're pretty sure that move had the opposite of the desired effect: It might have blown the door straight off its hinges.

Friday's (Feb. 10) episode ended with Kai (Chris Wood) returning to taunt Damon and Alaric, even though he died in a pretty gruesome and final way two seasons ago. The terror he's sure to inflict on Mystic Falls now that he's back is either going to be lots of fun or terribly bloody.

We've got a more pressing matter on our hands than Kai's villainous agenda, however. It's hard to say for sure, but we're thinking that Bonnie's door to hell is going to be open to anyone and everyone in the coming episodes.

Old characters seem to have flocked to the "Vampire Diaries" set for the final episodes, and it hasn't escaped our notice that most of them are super dead. With the exception of Jeremy (Steven R. McQueen), every single returning cast member was killed off -- and even more of them are likely suffering in hell, considering the shenanigans they got up to while they were alive.

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"The Vampire Diaries" has always had a problem keeping people dead -- how many times has Alaric comes back to life now? We're genuinely curious -- but it's excusable, seeing as this is the show's last hurrah.

Still, Uncle John (David Anders), Tyler (Michael Trevino), Vicki (Kayla Ewell), and Kai are all returning to the land of the living -- we assume -- which would be a hard trick to pull off unless they all manage to come back in the same fashion. An open door in hell, where some of them rightly belong and some of them don't, would be a perfect opportunity to bring back all these fan-favorites without it feeling like their cameos where shoe-horned into the finale.

We're more curious than ever about how these final episodes will play out -- and which dead and gone character we might see next.

"The Vampire Diaries" airs Fridays at 8 p.m. ET/PT on The CW.

Posted by:Lindsay MacDonald

Lindsay MacDonald is a Los Angeles based entertainment reporter with an affinity for CW superheroes. She graduated from Pepperdine University with a major in Media Studies and a borderline unhealthy obsession with TV in 2012. She would much rather spend the day binge-watching ‘The Flash’ or sorting ‘Game of Thrones’ characters into Hogwarts houses than venturing outdoors. TV words to live by: “Never ignore coincidence. Unless, of course, you’re busy. In which case, always ignore coincidence.”