Complete story — includes the ending
As graduation approaches, Caroline tries to distract Elena by focusing on simple tasks like sending out announcements about graduation, but Elena won't be swayed from her new obsession. Sheriff Forbes calls Damon and Stefan to the hospital, where someone has been attacking patients. Still trying to force Katherine to help her, Bonnie refuses to give up on her plan to defeat Silas. As a violent wind storm causes a power outage in Mystic Falls, ghosts suddenly appear some with good intentions and some bent on revenge. Bonnie turns Silas into stone and dies trying to bring Jeremy back to life.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, The Vampire Diaries season 4. HTML formatting and reference markers removed. · Content license