4. For Whom the Bell Tolls

Complete story — includes the ending

When Damon tries to remind Stefan about him and his past, Stefan has a problem with restraining. While Elena tries to help Stefan remember how they met and their past, Matt looks for help from Jeremy regarding his missing blocks of time and unusual circumstances upon waking up. Matt gets upset about Bonnie's lack of response to the people that need her, causing Jeremy to leave quickly. Jeremy is forced to tell Damon the truth about Bonnie. When Elena finally convinces Stefan to restrain himself, he tries to kiss her but she rejects him, citing her relationship with Damon, making him jealous and hungry. With all of this Stefan decides to turn his humanity off and feed from humans, he goes to the graveyard where he meets Caroline and Jesse and ends up attacking Jesse. Caroline is able to get Stefan under control and he trusts her. Back at the Salvatore mansion, Stefan burns his journals and tells Damon and Elena that he doesn't trust them and doesn't want to be around them. Elena finally learns that Bonnie is dead when Damon is forced to tell her. At an emotional gathering to ring the bell for Bonnie, she is able to speak to her friends with Jeremy relaying her words. Tyler returns when Damon, Elena, Caroline, Matt and Jeremy are honoring Bonnie's death. The mysterious professor, Wes, realizes that Jesse has vampire blood in his system and gives him an injection in an attempt to kill him.