06/28/2009 (09:00PM - 10:00PM) (Sunday) : ARTHUR RACES AGAINST TIME TO SAVE MERLIN- Posing as a servant girl, the witch Nimueh (Michelle Ryan) enters Camelot seeking revenge on Merlin (Colin Morgan) with a plot to poison him. Meanwhile, Bayard and the Knights of the Western Isles are welcomed to Camelot to celebrate the union between the two kingdoms. Unaware of Nimueh's true identity, Merlin saves Arthur (Bradley James) from drinking from a poisoned goblet by drinking the potion himself, which puts him in a deep coma. Gaius (Richard Wilson) discovers the origin of the poison and needs to make an antidote to save Merlin. Arthur disobeys Uther's (Anthony Head) commands and sets off on a quest to save Merlin. Angel Coulby and Katie McGrath also star.