<Tr> <Td_colspan="2"> The Vampire Diaries (season 2) List of The Vampire Diaries episodes </Td> </Tr> <P> "The Sun Also Rises" is the 21st episode of the second season of The CW television series, The Vampire Diaries and the 43rd episode of the series overall . It originally aired on May 5, 2011 . The episode was written by Caroline Dries and Mike Daniels and directed by Paul M. Sommers . </P> <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>

What episode does jenna turn into a vampire
find me the text answering this question