Merlin Season 4 Episode 1
The Darkest Hour - Part 1
Evil sorceress Morgana summons mighty gatekeeper the Cailleach, who opens a door to another world from which hellish creatures pour forth. As Arthur and his loyal knights take up arms, Merlin discovers the only thing that will stop them is an unimaginable sacrifice.
4 - 13The Sword in the Stone: Part TwoDec. 24, 2011- 4 - 12The Sword in the Stone: Part OneDec. 17, 2011
- 4 - 11The Hunter's HeartDec. 10, 2011
- 4 - 10A Herald of the New AgeDec. 03, 2011
- 4 - 9Lancelot du LacNov. 26, 2011
- 4 - 8LamiaNov. 19, 2011
- 4 - 7The Secret SharerNov. 12, 2011
- 4 - 6A Servant of Two MastersNov. 05, 2011
- 4 - 5His Father's SonOct. 29, 2011
- 4 - 4AithusaOct. 22, 2011
- 4 - 3The Wicked DayOct. 15, 2011
- 4 - 2The Darkest Hour - Part 2Oct. 08, 2011
- 4 - 1The Darkest Hour - Part 1Oct. 01, 2011
