Board Thread:Rewatching "Merlin" - Season Four/@comment-5102537-20131103103427/@comment-5367080-20131105180417

Well, there are two options here, one is simply that Morgana told him. I mean, Morgause knew, and she could have told Morgana who could have told Agravaine, which in all fairness might explain his sudden turn, but then we will never know :P

Having said that, Nimueh aside, Uther killed his brother Tristan and that wasn't exactly a noble deed on Uther's part, Agravaine has every reason to hate Uther with or without Igraine.

And as you've said its hardly surprising to expect that Morgana had a backup plan, it wouldn't be particularly hard for her to push someone into the Veil when it was all over, maybe a Knight of Camelot as the last nail in the coffin.

I actually think from the points that you brought up, the most sensible answer would be that Morgana found out the truth from Morgause and went on to tell Agravaine in order to get him on side, using his lust for revenge to her goals. As for Arthur, she turned him against Uther it might not be so hard to throw a few lies in with the truth to seal his loyalty, maybe tell Agravaine that Arthur was just like his father? Who knows.

As for Gwen, I agree with you there, I think they should have introduced a new character for that role, maybe a future knight? Gareth perhaps as he was a servant before he became a Knight of the Round Table. Or a love interest for Merlin? I don't know but I feel that was a missed opportunity when they we're just going to kill Uther and leave Guinevere without a job anyway.