Behind the Black Horizon (S03E17)

When it is discovered that Freya has been kidnapped and is in the hands of a dangerous new threat, the Mikaelson brothers are forced to put aside their differences in order to save her before it's too late. Following a lead that brings them to Mystic Falls, Elijah and Finn (recurring guest star Casper Zafer) run into deputy Matt Donovan (guest star Zach Roerig), who does not take well to new vampires in his town. Meanwhile, Klaus and Hayley work together to uncover the motive behind one of Lucien's (recurring guest star Andrew Lees) secret agendas, while a troubling shift in Kol's (recurring guest star Nathaniel Buzolic) behavior leaves Davina concerned for their future together. (iTunes)