The episode is called “Bloodlines.” The episode picks up where episode 1o left off. After Elena’s car accident, she is attacked by the person she hit. The next night, she wakes up on the side of the road…as a vampire. Elena must come to terms with her new life, and she starts to think that she might actually have a future with Stefan. Meanwhile, Stefan sets out to find who turned Elena.  A new witch comes into town and Damon learns that there is a spell that could open Katheryn’s tomb and free her and the other vampires. Katheryn is resurrected and Damon and Katheryn go on a rampage throughout the town of Mystic Falls, taking several innocent lives. Seeing Katheryn, the townspeople believe that it is Elena and blame her for all of the carnage.