As fans of the CW’s The Vampire Diaries know, the supernatural soap opera likes to keep hearts racing and blood pumping. But on Thursday night’s episode, entitled “The Murder of One,” the heart of one character is about to … stop.

Shocked? Surprised? Doubtful? Any of these emotions makes sense, given the fact that, well, the show’s villains are basically invincible. But on this latest episode, the magic white oak that created the vampires, which was previously rumored to have been destroyed, has magically been found! (Cue dramatic Beethoven music.) That makes the Originals fair game for slaughter, and if you kill one, you kill them all.

Who will it be? Will all the vampires be vanquished in one fell swoop? Or better yet, will they give actor Matthew Davis a way out of the show so that he can devote time to his new pilot, Cult. (Just a guess.)

The Vampire Diaries airs on the CW tonight at 8.