Board Thread:Rewatching "Merlin" - Season Four/@comment-5102537-20131130132300/@comment-5367080-20131212193818

Unfortunately, yet more unanswered questions, we can assume that Morgana was captured after Aithusa who was threatened in order to force Morgana into surrender, however how Aithusa was caught and how Morgana was not there to stop her capture remains a mystery.

Sarrum is a poorly written character, his involvement in the capture and torture of Morgana is skimmed over, never elaborated on save for the episode of his death, personally I feel a more appropriate storyline would have been to replace Sarrum with Lot and have him appear more in the series. Lot would make more sense as he would have more motive to target Morgana in particular and put the effort into bringing her down, he would also have the resources and would have been mentioned before rather than appearing out of the blue, unfortunately however it was Sarrum and it was poorly done.

As for the prophecy, what prophecy do you mean?