Brittany Frizzell

Sheriff Forbes calls Damon and Stefan to the hospital, where someone has been attacking patients. As a violent wind storm causes a power outage in Mystic Falls, ghosts suddenly appear - some with good intentions and some bent on revenge.

Terrifying hallucinations leave Elena shaken and confused, causing her to make a dangerous mistake. After giving Stefan some very disturbing news about Elena, Klaus takes matters into his own hands.

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 Elijah. In Mystic Falls, Klaus receives Caroline's reluctant help and comes to a new understanding of Silas' powers.

Damon and Stefan try a brutal new approach to provoke Elena into turning her humanity back on, and call for backup from a surprising source. Katherine is suspicious when Bonnie makes her an offer that she promises will benefit them both.