I had loads of things i wanted to say about this episode, but i've forgotten most of it!
I enjoyed it, though it definitely felt like you were watching half a story, i really need to see part 2! On a simple level part of the plot was like last series final Woman takes over Camelot with a King and a traitor inside the city, but other than that most of the story was different. Merlin enchanting Arthur to get him out of Camelot was interesting, i liked how Merlin made Arthur do the washing up I think it was revenge! I was also very pleased to have Gwaine back to his normal self, defending his friends and making jokes in dangerous fights. If they kill him off i will cry! Tristan and Isolde were interesting characters, i'm not totally sold on them yet, i want to see what they're like next week before i make up my mind on them. The reunions between Merlin and his mum was wonderfully done simple but effective, as was in my opinion the reunion between Arthur and Guinevere. It ended to suddenly for me, mainly because i thought there was another 5 minutes to go! But the constant chasing, being hunted down added tension to the episode.
Overall a return to the old school Merlin, serious moments (torture, violence, betrayal) with comic moments (tree hugging?!!!). I enjoyed it
The ratings were probably that good because it was sandwiched between the 2 parts of the final of Strictly Come Dancing, it attracted just under 13 million!