SECRETS OF THE PAST - When Elena and Katherine have the same dream that Stefan is in danger and desperately needs your help, convince Damon to help find Stefan. However, his plans are thwarted by a young mysterious call Tessa (guest star Janina Gavankar) who seems to know everything about the history of Stefan. In flashbacks of a time and place far, Tessa reveals the shocking secrets of her past and what she has planned for the future. She also has a disturbing message to Damon about his own future. Silas forcing an accomplice to help you search for Katherine, which leads Matt to a confusing and dangerous situation for your life. Finally, Silas reveals why he is determined to find Katherine and Damon and Elena are facing a disturbing new reality. Jesse Warn directed the episode written by Melinda Hsu Taylor and Rebecca Sonnenshine.