Elena and Alaric both lash out at John when Isobel’s unexpected arrival leaves Jenna devastated. Bonnie works with Damon and Jeremy to find the spell they’ll need to harness her ancestors’ power. A heartbroken Caroline doesn’t know what to do about Matt. Stefan and Damon realize they have a new secret weapon.
Katherine: (to Stefan and Damon) "Well, I'm reconsidering my alliance. Now I'm squarely on team you."Stefan: (to Damon) “Why don’t you call Alaric and let him know that his wife just showed up on his girlfriend’s doorstep.”Damon: (to Bonnie and Jeremy) “Emily was just my key to getting Katherine back before I knew what a nasty little bitch Katherine was.”Damon: (to Bonnie) “We’ll have to put that on our list of things to do today: Harness ancient dead witch power.”Isobel: (to Alaric) “I don’t want to do what I have to do without you knowing how much I loved you. And I did. I loved you so much.”Isobel: (to Elena) "“Maybe there’s a part of me that’s buried here, the human part, the part that I abandoned when I chose to become a vampire, the part that used to dream about the day that she’d know her daughter. Instead you got to meet the other part, the part that would betray her own flesh and blood."Isobel: “I am so sorry, Elena, that I was such a disappointment to you.”Matt: “Please make me forget, Caroline. I don’t want to look at you and see what I’m seeing right now.”John: (to Elena) “I always knew that she and Katherine were close, but I never realized that Isobel and her were working against me. Two of the world’s most uncaring and selfish vampires, and yet they were genuinely friends.”John: (about Isobel) “I was there when she gave birth to you, Elena. I saw how heartbroken she was to give you up. And because she was the first girl I ever loved and when she said she’d help keep you safe, I believed her. At this point I will do whatever you want me to do. If you feel safer with me not around, then I’ll go."Klaus: (in Alaric's body) "Zdravei Katerina.... I have missed you".