Season 1, Episode 3 - "The Mark of Nimueh"
28 June, 2009
A plague effects Camelot and dark magic appears to be the cause. Merlin and Gaius attempt to find a cure before it is too late. Gwen is accused of being a witch and is sentenced to death, while Merlin, Arthur and Morgana have to uncover the true culprit to save her.
