Image Gallery: 'Merlin' Season 3 Finale

The Coming of Arthur -- Arthur and Merlin are captured by a slave trader while trying to retrieve the Cup of Life, a magical goblet that can give the gift of immortality through magical means. Although Arthur and Merlin escape, the Cup falls into the possession of Morgause, who uses its power to create an immortal army to take on Uther. Within a week Camelot is crumbling under the control of Queen Morgana and Morgause's immortal army. While Arthur, Lancelot, Elyan and Percival prepare a counterattack, Merlin rushes to retrieve the Excalibur sword from the Lake of Avalon.