<P> Damon keeps looking for Stefan killing some other vampires in the process . Alaric returns to the car but Elena is not there so he goes back to the house knowing that she went there to help Stefan . Elena sneaks into the basement getting herself in trouble before Damon appears to save her . They find Stefan and Harper and they free them . Damon goes to distract Frederick, who already got suspicious that something is going on, while Elena helps Stefan to get out . </P> <P> Damon fights with Frederick and two other vampires when Alaric shows up to help him . Frederick escapes and Damon searches the house to find him but he is not there . They try to get out to head to the car but a bunch of vampires appear and they return in . Pearl and Anna return home to find them inside . Damon explains what happened before he and Alaric walk out the door, leaving Pearl and Anna behind with all the vampire bodies . </P> <P> Stefan and Elena make it back to the car but the key is missing . Frederick shows up and starts hitting and stabbing Stefan . He is about to kill him when Elena stabs him in the back . Stefan tells Elena to run but she gives him her wrist to drink from so he can regain his strength . Stefan tries to resist but eventually he drinks and manages to kill Frederick . </P> <P> In the meantime, Caroline (Candice Accola) has to drive to a family engagement in the storm and she leaves after she says goodbye to Matt (Zach Roerig). The main roads are closed so she drives in the backwoods when her car gets stuck in the mud . She has no cell reception so she decides to get out trying to get one and call for help . She falls down and grabs a tree root to steady herself only to discover that it is a human arm . </P>

Who died in episode 17 of vampire diaries