THE BIG DAY — With the final preparations for her union to Jackson (guest star Nathan Parsons) underway, Hayley (Phoebe Tonkin) begins to question whether the ritual will actually work. After arriving to the compound, Elijah (Daniel Gillies) has a tense encounter with Klaus (Joseph Morgan) and quickly suspects that his brother may be up to something. Meanwhile, Kaleb (guest star Daniel Sharman), who is harboring a devastating secret from Davina (Danielle Campbell), seeks help from Rebekah (guest star Maisie Richardson-Sellers) when he realizes time is not on his side. Lastly, Cami (Leah Pipes) makes a startling revelation involving baby Hope. Charles Michael Davis also stars. Matt Hastings directed the episode written by Carina Adly MacKenzie & Michael Narducci.