Merlin Season 5 Episode 2 : Arthur's Bane (2)

Ancient prophecies of Mordred weigh heavy on Merlin, for not even he can sway Arthur from his chosen path. As dawn breaks across the icy tundra, Merlin and Arthur are close to exhaustion. With each tortured step, the fortress of Ismere looms ever nearer and Merlin's fear intensifies. What game is Mordred playing? And what powerful secrets are Morgana and the druid Ruadan (Liam Cunningham) searching for amongst its twisted catacombs? It seems ...