While we wait for Christmas, the family can sit down and watch tonight’s exciting conclusion to the fourth season of Merlin, 4×13 ‘The Sword in the Stone, part 2′!

Tonight, on Christmas Eve at 20:00 GMT on BBC One, the fourth season of Merlin concludes with the second part of the finale! We can’t wait to see what happens; it looks like some pretty big moments from the Arthurian legends are playing out tonight. The episode description reads:

Morgana and Helios have successfully captured Camelot, and Merlin and Arthur are outlaws on the run. Trapped in Ealdor with a ruthless army closing in, their situation becomes desperate. Arthur must take control before Camelot is lost forever, but faced with Agravaine’s betrayal and the strength of Morgana’s force, the young King has lost his conviction.

Only Merlin can restore his faith, and only an extraordinary act can prove to the King that he was born to rule. Will the young warlock convince Arthur before his dreams of Albion fall to pieces?

And watch the promo:

Enjoy the season finale tonight! It’s been a really great season that have seen really big developments, and we’re sure season 5 (especially if it’s the last) will bring us even more classic moments from the legends.