<P> Caroline (Candice Accola) and Matt (Zach Roerig) are still trapped while Tyler (Michael Trevino) tries to kill them . Matt shoots him with the wooden bullets so he and Caroline can escape while Elena (Nina Dobrev) tries to explain Jenna (Sara Canning) what is happening and that she is in transition to become a vampire . Greta (Lisa Tucker) comes to complete the transition offering Jenna her blood and Jenna cannot resist and she drinks it . </P> <P> Stefan (Paul Wesley), Alaric (Matt Davis) and Elijah (Daniel Gillies) are headed to meet Bonnie (Kat Graham) so they can start their plan to kill Klaus (Joseph Morgan) when Damon (Ian Somerhalder) calls Stefan to tell him that Klaus has Jenna and he is going to use her as the vampire for the ritual . At the same time, Greta prepares everything for the ritual on Klaus' presence . Klaus hands her the moonstone and the ritual starts with Klaus killing Jules (Michaela McManus) first . </P> <P> Matt reveals to Caroline that he knows about her and that he was on vervain when he asked her to compel him . He also reveals her that her mother knows everything and she is trying to figure out what to do since she grew up hating vampires . While they talk, Tyler gets outside the house back to his human form and Caroline helps him . </P> <P> Alaric, Stefan and Elijah get to Bonnie and Jeremy (Steven R. McQueen) where Alaric tells Jeremy about Jenna and Stefan tells Bonnie that they will offer Klaus to take him and leave Jenna live . Stefan talks to Elijah before he goes to Klaus and asks him if he can trust him since Klaus is his brother and Stefan himself had many opportunities to kill Damon but he never did it because he could not . Elijah tells Stefan that he had other siblings too and Klaus took them away from him . Stefan realizes that Elijah wants revenge and he leaves . </P>

What episode of the vampire diaries does elana become a vampire