The Originals 2×21 “Fire with Fire” – After discovering that he’s been betrayed by his own siblings, Klaus (Joseph Morgan) teams up with an unlikely ally and sets off on a warpath, hell bent on revenge. Amidst the news that Klaus is on the loose, Elijah (Daniel Gillies), Rebekah (guest star Maisie Richardson-Sellers) and Freya (guest star Riley Voelkel) move forward with their plan to lure Dahlia (guest star Claudia Black) to the compound and take her down once and for all. Meanwhile, Hayley (Phoebe Tonkin) and Jackson (guest star Nathan Parsons) attempt to escape through the flooded bayou, even as Marcel (Charles Michael Davis) finds himself hunted by a dangerous new threat. Finally, Davina (Danielle Campbell) is presented with an offer that could allow her the chance to bring back Kol, though it will require her to make a life-altering decision. Leah Pipes and Yusuf Gatewood also star. David Straiton directed the episode written by Michael Narducci (#221). Original airdate 5/4/2015.