Stefan, Damon, Bonnie, Jeremy, Alaric, and Caroline team up and form a plan to kill Katherine at the masquerade ball held at the Lockwood home that night. Jenna returns home from the hospital, and Alaric agrees to keep an eye on Elena while the others carry out their plan. Katherine is visited by a witch named Lucy, who seems to be in Katherine’s debt and agrees to help her retrieve the moonstone at the ball that night. At the ball, Katherine pretends to be Elena and threatens to kill people if Stefan doesn’t hand over the moonstone. Bonnie encounters Lucy and intuitively realizes that she is a witch. Matt, Tyler, and a girl named Sara are drinking and partying in a room at the ball when Matt- under Katherine’s compulsion- begins taunting Tyler about his father and tries to fight him.

Caroline hears them and breaks up the fight, but Sara- who is also being compelled- stabs Tyler with a knife, and he accidentally slams her into a desk, killing her. His eyes turn yellow, showing that the curse has been triggered. Stefan and Damon trap Katherine in a room that Bonnie put a spell on, which prevents Katherine from leaving it.

Meanwhile, Elena discovers that the others are hiding something from her and comes to investigate at the ball. She demands Jeremy and Bonnie to tell her what is going on. Stefan and Damon try to kill Katherine, staking her several times, but stop when Jeremy comes running and tells them that every time they stake her, Elena is severely wounded too. Katherine reveals that she had Lucy put a spell on her and Elena, linking them together. She taunts them, demanding the moonstone. Bonnie confronts Lucy and demands that she lift the spell linking Katherine and Elena. Lucy lifts the spell and incapacitates Katherine; she collapses, gasping.

It is revealed that Lucy is Bonnie’s cousin. Elena recovers from her wounds but refuses to get back with Stefan, saying she wants to feel that she and her family are safe first. Damon traps Katherine in the underground tomb, saying that it is where she belongs and that death would have been too kind. Before he seals the tomb, she pleads with him and says that Elena is in danger, but he walks away. As Elena heads home, she is intercepted by a masked stranger, who grabs her and covers her mouth while she screams.

“Masquerade” is the seventh episode of season 2 of The Vampire Diaries and the 29th episode overall. It first broadcast October 28, 2010 on The CW Network.

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