TV Mash-Up: 'American Idol' Contestant Cast on 'Vampire Diaries'

A while back, right after "The Vampire Diaries" went on hiatus, we reported that Bonnie would be getting a new witch friend in New Salem: we knew her name is Greta, she's Luka's sister, and she might be there to help fend off the impending Klaus invasion. But there was a question left unanswered: who was going to play this new witch?

Wonder no further, because we have our Greta! A young actress by the name of Lisa Tucker will take on the role. Tucker has appeared on a few shows in her still-young career, including "Zoey 101," but she is most famous for her appearance in season 5 of "American Idol."

Yes, this is that same Lisa Tucker who made it all the way to the top 10 in the fifth season of "Idol," and now she'll be the newest witch on "The Vampire Diaries." We can only hope that she'll sing at some point.

SPOILERS FOLLOW! Greta is Luka's sister and Jonas' daughter who has been imprisoned by the evil Klaus. She may or may not already know about their deaths, so it could be an emotional debut for the new character.

Now that Greta is freed, she may end up helping Bonnie to take Klaus down, or she could end up being one more enemy Bonnie has to deal with. For Bonnie's sake, let's hope it's the former!