The Vampire Diaries' Kat Graham: Abby Bennett's Involvement in the Mythology Is Shocking

What does a vampire do when he can't get the job done? Call on a witch.

As we last saw on The Vampire Diaries, Stefan Salvatore is looking to take Klaus down, but a locked coffin stands in his way. Bonnie's powers seem to be the only thing that can uncover the key to destroying the most dangerous hybrid in town.

"Stefan feels that it's so important to his freedom, it's detrimental to everything that he wants, to get [the coffin open] because he doesn't want to deal with Klaus anymore on any level," Kat...