A major subplot involves Katherine's plan to trigger Tyler Lockwood's werewolf curse.
She compels Matt to pick a fight with Tyler, intending for Tyler to kill him. The_vampire_diares_2x07
Bonnie eventually convinces Lucy to switch sides. Lucy breaks the link and paralyzes Katherine, allowing Stefan and Damon to throw her into the tomb instead of killing her. Tyler's Transformation A major subplot involves Katherine's plan to trigger
Stefan and Damon decide they can no longer let Katherine terrorize the town. With the help of Bonnie, Jeremy, Caroline, and Alaric, they lure her into a trap at the Lockwood Mansion . Lucy breaks the link and paralyzes Katherine, allowing
While Caroline manages to knock Matt out to stop the fight, Katherine’s backup plan succeeds when a girl named Sarah (also compelled) attacks Tyler with a letter opener. In self-defense, Tyler accidentally kills Sarah, officially . The Final Twist
Just as the characters—and the audience—think the danger has passed, the episode ends on a massive cliffhanger: