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The second season finale of The Vampire Diaries brings the show to an emotional climax, particularly for Damon and Elena.
With the arrival of the full moon, Elena tries to prepare for whatever Klaus has planned and Tyler faces his second transformation.
Damon is willing to go to extraordinary lengths to prevent Elena from being a victim of Klaus' plan to break the curse.
Stefan and Damon are furious when they discover that Elena has defied them both to make a new ally and take control of the plan to out-maneuver Klaus.
As the high school prepares to throw a "1960s Decade Dance," Elena starts receiving disturbing messages from Klaus via an unusual source.
Isobel has returned. What will this mean for Elena and company? This episode starts to answer that question.
Can Elena, Stefan and Damon really trust Katherine? They'll wrestle with that question during this episode of The Vampire Diaries.
We delve into Stefan's past on this episode of The Vampire Diaries. He owns up to some dark secrets, which can't help from shape Elena's view of him.
Stefan and Elena get away for a weekend of romance on this episode of The Vampire Diaries. Or at least they try to. Danger intervenes.
Stefan tries to help Tyler on this episode, while John makes his presence felt. Elsewhere, Jules takes a hostage.
After a long hiatus, The Vampire Diaries returns with an episode that shows the consequences of Rose's werewolf bite. Things aren't looking good for her.
The Vampire Diaries has plenty of surprises and cliffhangers in store for this 2010 finale. Foremost among them? Tyler transforms into a werewolf.
Elena sets a plan in motion this week and asks for Rose's help in executing it. Meanwhile, Jeremy tries to help his sister retrieve the moonstone... but only lands himself in serious danger as a result.
Elena searches for the truth about Katherine and her past this week, using Caroline to help. We also meet Luka, a new student with an interesting family history.
Damon and Stefan rush to save Elena this week, learning new information about vampire and events in their past in the process. Elsewhere, Caroline tries to help Tyler transition into a werewolf.
A masquerade ball is at the center of this episode, as Stefan is forced to take Katherine as her date and pretend she's Elena. That can't be a good idea, can it?
Jeremy offers his help to Damon and Alaric on this installment. Meanwhile, Bonnie stumbles across new information on Katherine and shares it with Stefan.
Tyler learns more about his family's curse on this episode, while Elena tries to keep her brother away from the Lockwoods. Caroline's mom also plays a key role on "Kill or Be Killed."
It's flashback time! We got back to 1864 again this week, as Stefan takes drastic measures to learn just why Katherine actually came back to Mystic Falls.
Alaric and Damon team up on this episode. They head to Duke University to learn more about Isobel's research. Elsewhere, Stefan comes across a brand new danger.
A carnival is held in Mystic Falls this week, while Tyler learns more about Mason and who/what he is. We've recapped "Brave New World" in detail.
Katherine is back, and Mystic Falls will never be the same! This is the second season premiere of The Vampire Diaries, as repercussions from a major return are felt by all characters.