S4, E11: Jeremy is furious when Klaus tries to control him by putting Matt’s life in danger. Damon coaches Jeremy as he prepares to take on Klaus’ new vampires, but they find that Kol (recurring guest star Nathaniel Buzolic – Out of the Blue) has beaten them to it. Kol makes it clear that he will stop at nothing to convince everyone to give up the search for the cure. Looking for a new ally, Rebekah (recurring guest star Claire Holt) reminds Stefan that they were once close friends. When Sheriff Forbes (recurring guest star Marguerite MacIntyre) and Mayor Hopkins (recurring guest star Rick Worthy) question Shane (recurring guest star David Alpay) about his involvement in the Founders’ Council deaths, Bonnie steps in with questions of her own, and Shane’s responses push Bonnie to the edge of her powers. Elena negotiates with Klaus to keep Jeremy safe, but when danger suddenly appears from a totally unexpected enemy, Elena comes up with her own daring plan for Jeremy.