There might be wedding bells for Castle (Nathan Fillion) and Beckett (Stana Katic) on the season 6 finale of Castle.

Castle (Nathan Fillion) and Beckett (Stana Katic) will be going up against some pretty big enemies in the next three episode of 'Castle,' including but not limited to ninjas, a U.S. Attorney and '70s mobsters.

Castle (Nathan Fillion) and Beckett (Stana Katic) might become involved in a national investigation in an upcoming episode of 'Castle' season 6.

After coming back into contact with her mother's murderer, Beckett (Stana Katic) could find herself in an all-out war on a future episode of 'Castle.'