RACE FOR THE CURE — 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.
Written by Evan Bleiweiss and Jose Molina

Via KlausMyLovely: (Unofficial) Daniel, Ian, Paul, Claire and Nina. Boys in suits and girls in prom dresses. There was a limo that would take them to prom. Rebekah apparently goes with Elijah (not 100% sure). They also may have been filming at Rebekah's house at some point. (she was near the set)

(Unofficial) The episode will see Klaus, Elijah, and Rebekah travel to New Orleans, where Hayley has settled after betraying pretty much everyone in Mystic Falls. There, Klaus is reunited with his old vampire protege, Marcel. They'll also come across witches Sophie and Davina, who are on the cusp of a supernatural revolution, and psych student Camille, who seeks answers about innate evil after a horrific family tragedy. (source no longer working)