when do they notice katherine is in elena's body
No Exit (The Vampire Diaries) Damon wakes up chained on the Salvatore house's basement. Stefan is there and Damon tries to warn him that because of his cravings, one day he will kill him but Stefan tells him that they will find a solution. Damon points to Stefan that "Elena" provoked him to feed on her and then she kicked a stake towards him so he will kill him. Stefan does not believe that Elena would want that, he locks Damon up and gets upstairs where Caroline is. The two of them discuss what happened between Stefan and "Elena" and Caroline also tells him about Nadia and Matt and the text he sent to her. From Matt's text, who used "K" and not "E", they put the pieces together and they realize that Katherine is in Elena's body.
List of Lorien Legacies characters Six is portrayed by Teresa Palmer in the film adaptation
List of Wizards of Waverly Place characters Later in the series he reconciles with Juliet after she regains her youthful appearance.
Elena Gilbert In the final episode, Elena makes an appearance. When a weakened Bonnie dies from the sounding bell, she meets Elena in a dream-like forest. Elena hugs her and wonders if she really has died. Enzo appears and says it isn't her time and takes Bonnie back to the world of the living. When Bonnie wakes up, it was Stefan who resuscitated her. Elena, asleep, is then taken to the Mystic Falls High School by Katherine and places her in the boiler room. Stefan tries to rescue Elena, but Katherine had Kai spell the boiler room, so that Elena can't be taken out of the room. After Bonnie had deflected the hellfire back into the bell, Bonnie passes out. Elena wakes up and wanders the school. Stefan meets up with her. It looks like Bonnie has died, but in fact Elena is still sleeping and Stefan's ghost came to visit her in her dream. He had taken the place of killing Katherine instead of Damon, since Damon is human after Stefan gave him the cure. He came to say goodbye. After a tearful hug and saying goodbye, Stefan goes into afterlife. Elena finally wakes up because Bonnie has broken the spell over her. Elena reunites with Damon and the rest of the gang. Elena gives Caroline the message Stefan whispered into her ear, saying he did hear her voice message and will love her forever. In the epilogue, Elena continued to study at medical school. After finishing her education, she went back to Mystic Falls and lived together with Damon, happily married for a long time. After living out her life, she crosses over to the afterlife where she finally reunites with her parents, Aunt Jenna and Uncle John.