Damon goes with Elena and Bonnie to visit Whitmore College, where Professor Shane is taking over the Occult Studies classes formerly taught by Bonnie's grandmother. At a fraternity costume party, Damon takes advantage of the wild scene to give Elena a lesson in choosing a victim. Rebekah's attempt to buy Matt's forgiveness falls flat, but she is intrigued by unexpected news from Klaus. When Stefan questions Klaus about Connor's motives, Klaus reveals a long-ago encounter with a powerful group of vampire hunters, but it's Rebekah who delivers the information that stuns Stefan.
Spoilers ahead. Coverage follows the scope labeled below.
Complete story — includes the ending
Klaus and Rebekah realize Connor is one of "The Five." Bonnie, Elena, and Damon meet Professor Shane, who appears to be a believer in the supernatural. At a party being thrown on campus, Damon teaches Elena how to feed properly. Stefan learns the "Ultimate Weapon" of The Five is a possible cure for vampirism. Connor escapes Klaus by killing one of his hybrids, and leaves to find the one who sent him to Mystic Falls in the first place: Professor Shane.