The present-day murders in Mystic Falls remind Damon of a similar crime spree a century earlier. In flashbacks to 1912, Damon recalls a beautiful vampire, Sage (guest star Cassidy Freeman), who showed him a whole new way to exist. Sheriff Forbes warns Damon not to get involved in her investigation, but Damon is convinced she's going after the wrong suspect. Elena and Matt resort to breaking and entering in their search for evidence to prove Dr. Fell (guest star Torrey Devitto) is a murderer.