The Vampire Diaries - Season 2 -
: Katherine returns to Mystic Falls with a plan to use Elena Gilbert to break a centuries-old curse involving a moonstone, vampires, and werewolves.
: The Lockwood family curse is triggered when Tyler Lockwood accidentally kills a peer, leading to his first transformation and the introduction of his uncle, Mason Lockwood. Major Character Evolutions The Vampire Diaries - Season 2
: The season introduces Elijah and Klaus Mikaelson , the world's first vampires. Klaus , a vampire-werewolf hybrid, serves as the season’s primary antagonist. : Katherine returns to Mystic Falls with a
: Forced to face her heritage as a Petrova doppelgänger, Elena becomes more active in her own survival, eventually sacrificing herself (and being brought back) during Klaus's ritual. Episode Guide the world's first vampires. Klaus