Gwen is mistaken for Morgana and kidnapped by the savage outlaw Hengist. Uther refuses to pay her ransom so Arthur defies his father, heading out into dangerous enemy territory to fight for Gwen`s freedom. Merlin suspects Arthur`s devotion to Gwen is more than just that of a prince to one of his subjects. But how will Arthur react when he finds Gwen is not alone in Hengist`s castle? She and Lancelot have found each other again, and powerful feelings have been