<P> Bonnie (Kat Graham) and Jeremy (Steven R. McQueen) go to college to find Liv (Penelope Mitchell) and ask her help . They need her to do a spell to find Katherine's location . Liv agrees to help but her interest on Jeremy makes Bonnie get jealous . </P> <P> Tyler watches over Damon who knows what buttons to push to make him enter the cell . The two of them argue and when Tyler gets close enough, Damon grabs him and feeds on him . Damon gets his strength back, breaks the chains and escapes . Damon heads to find Wes to ask him for the antidote of the ripper virus, but Wes refuses to help him, leading Damon to kill him . Meanwhile, Katherine takes Nadia to a church to keep her safe while waiting for Wes, but because Wes is taking a long time with the cure, Katherine leaves to find him . When she gets to his laboratory, she finds him dead . </P> <P> Stefan calls Katherine revealing her that they know and tells her that they have Nadia at the Salvatore house and if she wants she can run away to survive or come and see her daughter for a last time . Katherine chooses the latter and shows up at the Salvatore house . Everyone is there and they let her in with Nadia to say goodbye . Katherine apologizes to Nadia, tells her that she loves her and Nadia dies happy . Katherine stands and tries to get away but Damon is blocking the door . She seems to accept that there is no way out this time and she asks who has the traveler knife to stab her . She says goodbye to everyone in her own way leaving Stefan last . She kisses him and Stefan stabs her . Katherine collapses and leaves Elena's body . </P> <P> Stefan and Damon watch over Elena waiting for her to wake up . Meanwhile Caroline and Tyler discuss her sleeping with Klaus . Matt takes Nadia's body to bury it despite Stefan's suggestion to throw her in a ditch . Bonnie is praying to her father at a church when Katherine appears, ready to cross over to the other side via Bonnie . Before she does, she takes the time to reveal to Bonnie that she had already accepted her death sentence before showing up at the Salvatore house, but that did not mean she would cooperate . When Katherine went to Wes' laboratory earlier, she found out that Wes never intended to help Nadia . He had instead extracted werewolf venom from Nadia's wound and used it to enhance the ripper virus . Katherine then injected herself with the virus so that when Elena wakes up, she will be doubly infected . </P>

When does katherine get out of elanas body
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