Nina Dobrev Nina Dobrev

What happens when a pair of doppelgangers with a tempestuous past comes face-to-face? Things get heated.

Elena is in search of Katherine on this week's episode of The Vampire Diaries and with the help of her new sidekick Rebekah, it won't be long before she finds her.

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"The meeting of the two of them is interesting because you have the young and old, the hungry and the bitter, and they're both extremely divisive and powerful," Ian Somerhalder says. "That's a big problem because Katherine's inclination is to kill Elena — that would be the best thing to do — because the boys want Elena to take the cure, but Katherine wants it because it's her only leverage."

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Watch this week's Vampire Diaries Bite for more on the Katherine-Elena encounter. Plus: Somerhalder explains why the remaining episodes this season will focus largely around Silas.

The Vampire Diaries airs on Thursdays at 8/7c on The CW. Additional reporting by Sadie Gennis