THE POWER OF DOPPLEGANGERS — While Elena and Damon try to explain Amara’s situation to Stefan, Dr. Wes (guest star Rick Cosnett) gives Katherine some deeply disturbing news. Nadia (guest star Olga Fonda) shows up at Caroline’s dorm room, searching for Katherine. After a surprising conversation with Amara, Jeremy and Bonnie share a glimmer of hope. Silas fails to keep a promise, causing Damon to turn to Tessa (guest star Janina Gavankar) for help with his new plan, and Stefan makes a heartbreaking confession to Damon and Elena. Leslie Libman directed the episode written by Rebecca Sonnenshine.