S1, E6: Elena demands that Stefan explain the frightening events that have been happening in Mystic Falls. In flashbacks, Stefan explains how his rivalry with Damon began. Back in the present, Damon impulsively takes control of Vicki's future, and a confused and frightened Vicki runs away. Sheriff Forbes (guest star Marguerite MacIntyre - Kyle XY) and Mayor Lockwood (guest star Rob Pralgo - Army Wives) take steps to protect the town.