The Vampire Diaries Guest cast, played by Phoebe Tonkin Episode 4x03: The Rager (Oct 25, 2012) Episode 4x05: The Killer (Nov 8, 2012) Episode 4x06: We All Go a Little Mad Sometimes (Nov 15, 2012) Episode 4x07: My Brother's Keeper (Nov 29, 2012) Episode 4x08: We'll Always Have Bourbon Street (Dec 6, 2012) Episode 4x09: O Come, All Ye Faithful (Dec 13, 2012) Episode 4x16: Bring It On (Mar 14, 2013) Episode 4x20: The Originals (Apr 25, 2013)