How will Elena react to Katherine's presence in the Salvatore household? See for yourself in this clip from "The House Guest.
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Can you really trust Katherine? That's the question Damon, Stefan and Elena are faced with on "The House Guest."
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The Vampire Diaries Season 2 Episode 16 Quotes

Guess who's coming to dinner?

Damon

So, let me guess... in addition to the moonstone, the doppelganger, the lion, the witch and the wardrobe you need to find this witch burial ground.

Damon