'Vampire Diaries' Season 5 Spoilers: Who is Going To Kill The Elusive Katherine Pierce? Watch Promo Video For Upcoming Episode 15 Titled 'Gone Girl'

Katherine Pierce's (Nina Dobrev) fun days in Elena's body are now over after Stefan (Paul Wesley) and Caroline (Candice Accola) figured it out in "The Vampire Diaries" Season 5, Episode 14 "No Exit." The promo video released for Episode 15 titled "Gone Girl" teased about the TVD gang coming up with a plan to save their friend Elena Gilbert (Nina Dobrev).

In the CW's "Vampire Diaries" promo video, Katherine will be in trouble as Elena's friends plan to kill the Petrova doppelganger to bring her back. Nadia (Olga Fonda) kicks off the promo video looking really sick as she tells her mother that Stefan, Damon (Ian Somerhalder) and the rest of the gang will come for her if they found out who she really is.

According to Stefan, they must stab Katherine with the Travelers knife in order to bring Elena back. Caroline further suggests that they need to make Katherine come to them. "Get her guard down," the blonde vampire stated.

The ending clip shows the plan is working for the TVD gang as Katherine enters the Salvatore mansion. "So, which one of you is going to get to kill the elusive Katherine Pierce?" Katherine asked. The Comic Book Movie report offered the "Vampire Diaries" fans the synopsis for the next episode as well as the image stills. Click HERE to see the photos.

The synopsis for Episode 15 "Gone Girl" reads: "FLASHBACKS TO NADIA'S SEARCH FOR KATHERINE - While Nadia (guest star Olga Fonda) remembers her centuries-long search for her mother, Stefan (Paul Wesley), Caroline (Candice Accola) and Matt (Zach Roerig) come up with a desperate new plan to save Elena's (Nina Dobrev) life. For the second time, Bonnie (Kat Graham) and Jeremy (Steven R. McQueen) must turn to Liv (guest star Penelope Mitchell) for help. Damon baits Tyler (Michael Trevino) into a nasty confrontation, then takes off to seek revenge on Dr. Wes (guest star Rick Cosnett). Caroline and Tyler come to a new understanding. Finally, Bonnie learns of a terrifying secret that will threaten the lives of all her friends. Lance Anderson directed the episode written by Melinda Hsu Taylor."

Find out if Katherine and her daughter, Nadia, will survive in "The Vampire Diaries" Season 5, Episode 15 "Gone Girl" scheduled to air on Thursday night, March 6, at 8 pm ET on the CW Network.

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