AN ANCIENT PRESENCE IN MYSTIC FALLS — Stefan and Damon come to Elena’s and Katherines (Stefan and Damon's sister) assistance and, in the process, learn surprising new information about people, vampires and events in the distant past, things that aren't what they wanted to hear as well as hearing about plans for their sister, which shocks them. Their sister Katherine has to deal with the past as well when she realizes she knows her kidnappers. Jeremy helps Bonnie after she casts a difficult and exhausting spell and Caroline does what she can to make things easier for Tyler. Finally, Stefan and Damon reach a new understanding