Spoiler! Vampire Diaries Spoiler Video For Season 4, Episode 9 — Do Klaus and Caroline Have a Thing? Share Tweet December 11, 2012 at 12:25PM EST by Wetpaint Staff Related: The Vampire Diaries, Klaus Mikaelson, Spoilers, Caroline Forbes, Season 4 Episode 9 Credit: E! Online Caroline (Candice Accola) and Klaus (Joseph Morgan) are nice to each other in Vampire Diaries Season 4, Episode 9, "O Come All Ye Faithful." Need your daily Vampire Diaries fix? Like us on our Facebook page, or follow us on Twitter!