The Vampire Diaries 6×16 Extended Promo “The Downward Spiral” The Vampire Diaries 6×16 “The Downward Spiral” – Caroline flipped the switch. The Vampire Diaries returns with all new episodes Thursday, March 12th on The CW! Show More… 226 Comments Related Videos The Vampire Diaries 6×20 Extended Promo “I’d Leave My Happy Home for You” (HD) The Vampire Diaries 6×18 Extended Promo “I Never Could Love Like That” (HD) The Vampire Diaries 6×16 Promo “The Downward Spiral” (HD) The Vampire Diaries 6×09 Extended Promo “I Alone” (HD)