MARKOS ARRIVES IN MYSTIC FALLS — In order to keep Stefan from being harmed by Sloan (guest star Caitlin McHugh) and the Travelers, Caroline and Enzo (guest star Michael Malarkey) agree to make a trip to Atlanta to find a newly discovered doppleganger. Caroline is surprised when Enzo opens up to her about his past. Damon and Elena spend an awkward afternoon at Jeremy’s parent-teacher conference, where they hear bad news about his behavior at school. Afterwards, Damon reluctantly tells Elena upsetting news about Jeremy's personal life. Bonnie has an unsettling encounter with Luke (guest star Chris Brochu), and learns more about his family history. Liv (guest star Penelope Mitchell) fills Jeremy in on the rumors about the Travelers’ next move and demonstrates her considerable power. Jeremy makes an unexpected deal with Liv, then makes a decision that is devastating to Elena. Stefan and Caroline share a special moment of friendship. Finally, a terrifying turn of events at the Travelers’ camp leads to the appearance of their mysterious leader, Markos (guest star Raffi Barsoumian). Leslie Libman directed the episode written by Brett Matthews & Neil Reynolds.