The_vampire_diares_2x06

She needs a werewolf to complete her ritual, and if Mason is gone, she’ll force Tyler’s curse to trigger by making him kill Matt.

Bonnie has a vision of Mason and Katherine together, revealing they are allies. This leads Stefan and Damon to kidnap and torture Mason for information. The_vampire_diares_2x06

Katherine proves she is always three steps ahead by targeting Elena’s family. She needs a werewolf to complete her ritual,

Katherine reveals that killing Mason didn't stop her; she already has a backup. and if Mason is gone

The search for the moonstone leads to a brutal confrontation.