Months following their violent and deadly showdown with the powerful witch Dahlia, a rift continues to divide brothers Klaus (Joseph Morgan) and Elijah (Daniel Gillies), while Freya (Riley Voekel) searches for a way to heal their fractured bond and return their family to the way they once were. Meanwhile, Klaus' suspicion piques when he learns that an old vampire friend named Lucien (guest star Andrew Lees) has arrived to New Orleans with a mysterious agenda involving the Mikaelson's remaining sire lines. Elsewhere, Elijah questions whether he can truly forgive his brother for his mounting offenses, while Hayley (Phoebe Tonkin) struggles with being cursed to her wolf form in the bayou. In the French Quarter, Vincent (Yusuf Gatewood) and Cami (Leah Pipes) assist Detective Kinney (guest star Jason Dohring) after a series of gruesome discoveries are made, leading them to believe they may have a serial killer on the loose. Finally, Marcel (Charles Michael Davis), who has regained control of the French Quarter once again, tries a new strategy to recruit vampires, while Davina (Danielle Campbell), who is now Regent to the New Orleans witches, makes a decision that will find her and Marcel on opposite sides of an escalating conflict.