On Verge of Werewolfdom

Tyler is still a human being in this scene. But a few hours later, the by would be turned into a werewolf. Look out, Mystic Falls!
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Ready for Battle

The men are ready to take down Katherine on the episode "Masquerade." They look ready for battle, don't they?
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A Dance with Katherine

Don't be fooled, folks. Stefan isn't dancing with Elena here. That's Katherine.
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The Salvatore Siblings

What could be on the minds of Stefan and Damon here? Our best guess: the death of Katherine.
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Damon with Bonnie

Damon does not look at all pleased with Bonnie in this photo, does he? We wonder if these two will ever hook up.
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Taunting Stefan

Katherine attends a Masquerade Ball with Stefan on the aptly-titled episode "Masquerade." She seems to be taunting the vampire in this scene.
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Suspicious Scene

Look at Damon in the background of this scene. He sure looks suspicious, doesn't he?
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Katherine at the Ball

Katherine is on the prowl on the episode "Masquerade." Most people at the party think she's Elena.
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That's Katherine!

Careful, residents of Mystic Falls. This is Katherine, not Elena, attending a party on the episode "Masquerade."
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Preparing to Kill

Damon and Alaric are ready to kill. They plot to take down Katherine on the episode "Masquerade."
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Pair of Vampires

Caroline is coming into her own as a vampire. Even Damon has to be impressed by how strong she's become.
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Stud in a Suit

Damon looks downright dashing in this shot from "Masquerade." The vampire sure knows how to dress up, doesn't he?
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The Vampire Diaries Season 2 Episode 7 Quotes

You aren't gonna kill Katherine... I am.

Stefan

Tell Damon and Stefan to give me the moonstone or I will rip this town apart until it rains blood.

Katherine