The Vampire Diaries, an American supernatural drama, was officially renewed by The CW for a full 22-episode season on February 16, 2010. The first episode premiered on September 9, 2010, at 8 p.m. ET. The season picks up immediately after the events of the season one finale. All the series regulars returned. The second season focuses on the return of Elena Gilbert's (Nina Dobrev) doppelgänger, Kat... Wikipedia