S2, E7: Stefan and Damon decide on a new plan to deal with Katherine at the Lockwood's masquerade ball. Katherine calls on an old friend, Lucy (guest star Natashia Williams – Romeo!, She Spies), to attend the ball with her. Bonnie, Jeremy and Alaric all do what they can to help Stefan and Damon, but Katherine has a surprise planned that none of them could foresee. Things take an ugly turn when Matt and Tyler start doing shots with their friends.