Now that the secret is out, how are they going to save Elena (Nina Dobrev) in the next "Vampire Diaries" episode, 515, "Gone Girl," for which the CW released a new sneak preview on Thursday, Feb. 27, after "No Exit"?
In this next "TVD" episode, there will be more flashbacks, this time as Nadia (Olga Fonda) remembers her centuries-long search for her mother. In the latest episode, "No Exit," she revealed to Katherine that Tyler (Michael Trevino) bit her, and everyone knows what that means. Are two Petrovas going to die in the same episode?
Meanwhile, Stefan (Paul Wesley), Caroline (Candice Accola) and Matt (Zach Roerig) come up with a desperate new plan to save Elena's (Nina Dobrev) life, now that Stefan and Caroline put the pieces together and realized why "Elena" had been acting so strange lately. Once again, Bonnie (Kat Graham) and Jeremy (Steven R. McQueen) have to turn to Liv (Penelope Mitchell) for help, but will she be able to help them?
Also, Damon (Ian Somerhalder) baits Tyler (Michael Trevino) into a nasty confrontation before taking off to get revenge on Dr. Wes (Rick Cosnett), and you can't blame him for wanting revenge even more now after what he did. But, in possibly good news, Caroline and Tyler reach a new understanding, which sounds pretty positive given how their last conversation in "No Exit" went.
Finally, Bonnie finds out a terrifying secret that will threaten the lives of all her friends, also known as something that happens annually?
The "Gone Girl" promo shows Stefan informing Damon about the Katherine/Elena situation. "She's brilliant," Damon says. Speaking of Damon, what exactly is he up to once he's out of his chains in the promo? Is he with Wes?
Meanwhile, Katherine knows they know (and hopefully that doesn't turn into a "Friends" situation), but what's her play when she walks into the Salvatore house and asks, "So, which one of you is going to kill the elusive Katherine Pierce?" She has to have something up her sleeve, right? After all, she is Katherine Pierce.
Also, don't forget to check out the promotional photos the CW has released in the slideshow.
"The Vampire Diaries" season 5 airs Thursdays at 8 p.m. on the CW. What do you think of the episode 15 "Gone Girl" photos and promo?