I Know What You Did Last Summer (S05E01)

In the tumultuous fourth season, the world of Mystic Falls, Virginia, was turned upside down when the beautiful and compassionate Elena Gilbert (series star Nina Dobrev) came face to face with her worst nightmare -- life as a vampire. While Elena struggled to control her new powers and the overwhelming thirst for blood, the astonishing news that a cure for vampirism may actually exist reached Damon (series star Ian Somerhalder) and Stefan (series star Paul Wesley) Salvatore, the two vampire brothers who love her. Searching for the cure led the brothers, along with Elena's brother, Jeremy (series star Steven R. McQueen), and her best friends, Bonnie (series star Kat Graham) and Caroline (series star Candice Accola), to a horrifying confrontation with the ancient and all-powerful immortal Silas, who had been entombed with the cure for more than 2,000 years. But Elena wasn't the only vampire who longed to return to life as a human, and the question of who would take the cure was resolved in the heart-stopping season finale, along with moments of unexpected joy, unspeakable sorrow and a confession of true love. (Warner Bros. UK)