Spoiler! Vampire Diaries Spoiler Video For Season 4, Episode 9 — Do Klaus and Caroline Have a Thing? Tweet December 11, 2012 at 12:25PM EST by Wetpaint Entertainment Staff Related: The Vampire Diaries, Spoilers , Caroline Forbes , Klaus , 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!