Gone Girl

S5 E15: While Nadia (recurring guest star OLGA FONDA) remembers her centuries-long search for her mother, Stefan, Caroline and Matt come up with a desperate new plan to save Elena's life. For the second time, Bonnie and Jeremy must turn to Liv (recurring guest star PENELOPE MITCHELL) for help. Damon baits Tyler into a nasty confrontation, then takes off to seek revenge on Dr. Wes (recurring guest star RICK COSNETT). Caroline and Tyler come to a new understanding. Finally, Bonnie learns of a terrifying secret that will threaten the lives of all her friends.