Brittany Frizzell

Terrifying hallucinations leave Elena shaken and confused and she makes a painful confession to Stefan. Matt gives Damon startling information about Professor Shane (DAVID ALPAY).

As Graduation Day approaches, Caroline tries to distract Elena by focusing on simple tasks like sending out announcements, but Elena won't be swayed from her new obsession. Sheriff Forbes (recurring guest star MARGUERITE MacINTYRE) 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.

Elena and Rebekah take off in search of Katherine and find themselves in a small town in Pennsylvania, where Elena has a surprising encounter with another old acquaintance -- Elijah. Stefan and Damon are both concerned about Elena’s state of mind and are determined to do what’s best for her, but she makes it clear that helping her will be difficult. Damon is not sure how to react when Stefan reveals his unexpected plan for the future. Meanwhile, in Mystic Falls, Klaus receives Caroline’s reluctant help and comes to a new understanding of Silas’ powers.

The Salvatore brothers ask for backup from a surprising source when Elena calls their bluff. Katherine is suspicious when Bonnie makes her an offer.