Katherine reveals she has a witch of her own, Lucy Bennett (Bonnie's cousin), who has magically linked Katherine to Elena. This means any physical harm inflicted on Katherine—like being staked—is simultaneously felt by Elena.

Elena tells Stefan that while Katherine is gone, she still doesn't feel safe and can't be with him right now.

In of The Vampire Diaries , titled "Masquerade," the tension in Mystic Falls reaches a boiling point during the Lockwood Masquerade Ball. This pivotal episode features a high-stakes plan to take down Katherine Pierce, the activation of a supernatural curse, and a shocking cliffhanger ending. The Plan to Stop Katherine

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

As Elena walks to her car in the parking lot, she is suddenly abducted by a masked figure , setting the stage for the introduction of the "Original" vampires. The Vampire Diaries recap: Teen Wolf Too