She's baaack! This trailer for the upcoming season of The Vampire Diaries just hit, and as the show's spoilery Comic-Con panel promised, we're going to be seeing a whole lot of Katherine as she returns to Mystic Falls. It's got me wondering if maybe those sneak peek photos we saw are actually her in disguise and not Elena?! There's a whole lot of room for mistaken identity cases here. One thing's for sure: girlfriend is out for blood. Plus, Jeremy and Caroline's lives are on the line. There's plenty of sex and scandal in store, so get excited when you read more.