User blog comment:Miss guinevere/Series 4 finale/@comment-4650675-20111223122837/@comment-4135736-20111224103157

I think I know the reasons Mordred has if he wanted to kill Arthur because in The Nightmare Begins and The Witch's Quickening, Arthur, when he tried to find Morgana when she was missing, led attacks against the two groups of people Mordred stayed with - The Druids (The Nightmare Begins) and Alvarr and his men (The Witch's Quickening). I bet Mordred would want revenge aganst Arthur for that but I was disappointed that Arthur didn't confront Mordred on both occasions.