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.

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.

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.