Kat Graham on Bonnie's New Edge in Vampire Diaries Season 4 (VIDEO) Tweet September 11, 2012 at 03:31PM EDT by Wetpaint Entertainment Staff Related: The Vampire Diaries, Kat Graham , Bonnie Bennett , Season 4 Credit: The CW Kat Graham thinks Bonnie might go off the deep end in Vampire Diaries Season 4.
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