The CW has released the synopsis for the crossover episode of The Originals! This is the episode where Nina will be playing the original doppleganer, Tatia
THE VAMPIRE DIARIES’ NINA DOBREV APPEARS IN FLASHBACKS AS TATIA, THE ORIGINAL DOPPELGANGER — In order to show Elijah (Daniel Gillies) that her plan is what’s best for him, Esther forces him to relive a time long ago when he loved a young woman named Tatia (guest star Nina Dobrev). With the help of Marcel (Charles Michael Davis), Hayley (Phoebe Tonkin) is determined to find Elijah, who has gone missing, but is torn when she discovers that Klaus (Joseph Morgan) is also in trouble. Elsewhere, Cami (Leah Pipes) finds herself in a dangerous situation when Mikael (guest star Sebastian Roche) takes her hostage as a way to lure Klaus to him, and Davina (Danielle Campbell) makes an upsetting discovery about Kaleb’s (guest star Daniel Sharman) true identity. Lastly, a violent confrontation ensues when Klaus comes face-to-face with Mikael. Michael Robison directed the episode written by Declan de Barra & Diane Ademu-John (#205). Original airdate 11/3/2014.