After last week's spooky return of the former King Uther, this week's episode is a lot less scary and a lot more action packed. It's also filled with amazing guest stars. The return of Arthur's once betrothed is definitely not what this fan expected.

This week Morgana sets a plan in motion that is her most devious and evil plan to date. She's disguised herself as an old woman in order to sneak into Camelot with her captive Princess Mithian. It turns out Nemeth and Camelot have stayed allies despite Arthur turning away the young princess three years ago. Remember they were supposed to get married after the Lancelot-Guinevere betrayal.

Now, three years later it seems like the two kingdoms are friends. And good friends. Though Guinevere and Mithian only share a few scenes together and interact a couple of times, it's clear there isn't any cattiness between the two women at all. Which is so refreshing. I've read a few early reviews that were upset about this and I've got to say, those reviews must have clearly been written by men. As a woman, it's nice to see that two women can be friends despite sharing history with a man.

So, Mithian arrives in Camelot requesting help from Arthur to save her father from King Odin. But it's a trap. Except he doesn't know it.

A noticeable difference in this episode is that fans are finally treated to the married life of the King and Queen of Camelot. In their shared chambers, Guinevere questions her husband's motives for helping Mithian. This has nothing to do with jealousy however. She's worried he's doing it for revenge against Odin who killed Uther four years ago. The two share a lovely moment in the privacy of their chambers and fans of this couple should rejoice watching them.

But trust me when I tell you there's a lot of action in this episode. And everyone plays their part of being badass. Even Gaius, who goes on this mission.

The episode showed something that's sometimes a rarity with Merlin episodes. That's balance. Everyone had their moment to shine as both an actor and a character. Bradley James as Arthur proved once again why he is the Once and Future King that will unite the lands of Albion. Colin Morgan's Merlin was a hero in his own right and his growth was clear and plain to see for all. Angel Coulby's Guinevere continues to be the wise Queen that Camelot has desperately needed all those years. And Katie McGrath's Morgana proves once again that she is the villain of the story and that she is not losing her place to Mordred anytime soon.

There were plenty of guest stars this week but the one who stands out the most is Janet Montgomery as Princess Mithian. She draws your sympathies because of her situation and though you hate that she's helping Morgana you actually understand and feel sorry for her. I dare you to tell me you wouldn't have done the same thing for someone you loved.

Overall, a much stronger outing for the BBC series compared to last week's episode. Last week kind of felt a bit like a filler episode compared to the amazing story we got this week. And everyone who knows me knows how much I hate that word. Honestly, considering we don't know yet if it is the final season or not, fans of the beloved series should sit back and enjoy the show. It's going to be a hell of a roller coaster ride through December.

What did you think of the episode? Let us know either in the comments below or tweet us @FilmThrasher on Twitter!