AN ANCIENT PRESENCE IN MYSTIC FALLS — Stefan (Paul Wesley) and Damon (Ian Somerhalder) come to Elena’s assistance and, in the process, learn surprising new information about people, vampires and events in the distant past. Jeremy (Steven R. McQueen) helps Bonnie (Katerina Graham) after she casts a difficult and exhausting spell, and Caroline (Candice Accola) does what she can to make things easier for Tyler (Michael Trevino). Finally, Stefan and Damon reach a new understanding.