"The Fury" () reveals that the Salvatore's former lover Katherine von Swartzchild was the evil force in Fell's Church and that she ran Elena off the bridge where Elena turned into a vampire. The Fury introduces Katherine as a villain with the plot revolving around a newly turned Elena trying to cope with the stresses of becoming a vampire. Stefan and Damon work together to try and stop Katherine who has been possessing animals and killing people all around Fells Church. Discovering Katherine's secret lair beneath the graveyard Stefan, Damon and Elena fight her resulting in both Elena and Katherine's deaths.