The Vampire Diaries: - Season 2

: His character deepens as he struggles with his humanity and his unrequited love for Elena .

: Transformed into a vampire by Katherine, Caroline evolves from a "shallow" high school girl into a confident, strong supernatural being. The Vampire Diaries - Season 2

The season consists of 22 episodes that aired on from September 2010 to May 2011. Saying Farewell to 'The Vampire Diaries' | The Nerd Daily : His character deepens as he struggles with

: The season introduces Elijah and Klaus Mikaelson , the world's first vampires. Klaus , a vampire-werewolf hybrid, serves as the season’s primary antagonist. Saying Farewell to 'The Vampire Diaries' | The

: Katherine returns to Mystic Falls with a plan to use Elena Gilbert to break a centuries-old curse involving a moonstone, vampires, and werewolves.

: 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