Castle-Beckett Wedding To Air Before Finale Episode?

Assuming Beckett and Bracken meet again in a future episode, Beckett might be getting down to business as the two attempt to eliminate each other.
Due to the best of Bracken's knowledge, Beckett has information that will sink him," Marlowe said. "But this means if something were to happen in the future, if these two come into contract, the gloves are off. That Sword of Damocles hanging over her head has to give her a sense of unease."
Marlowe added that Beckett's knowledge of Bracken being out and about in the world will linger in her mind through upcoming episodes. However. this doesn't mean she'll be diving into any crazy plots to hunt Bracken down anytime soon. Marlowe suggested that her relationship with Castle (Nathan Fillion) is too important for her to do anything too risky.