Camelot - The Battle of Bardon Pass

The final night of Camelot finally arrives.  Part one for the night sees Morgan escape Camelot leaving Igraine feeling crazed by seeing herself.  Merlin doesn't believe Igraine at first, saying they had been together the night before, then he realises what Morgan has done.  (I am confused here because I thought he recognised it was Morgan while he was busy having sex with her but chose to keep going!).  They travel to Morgan's castle to confront her and she captures them instead!
Meanwhile, Leontes confronts his wife Guinevere and she cannot lie to him.  He confronts Arthur and Arthur's 'brother' Kay exposes his treachery to his knights, eroding their love for him.
Morgan sets up an attack at Borden Pass, in the hope his knights will not support him as before and that he will be killed so she can take over.  Arthur and his men leave for Borden Pass and Morgan leaves her castle with her captives to await proof Arthur is dead so she can take over.
The battle at Borden Pass is deadly and Kay is struck by an arrow.  He needs to be taken away to be healed.  They realise that one must stay behind if they are to win this fight and Arthur volunteers because his men no longer trust him and he may very well die.  His men leave and he sets about setting traps for his enemy.
As the penultimate episode for this hit and miss series, it certainly sets up the story to finish with a bang, bringing everything to a head and everyone together for the final confrontation.