Merlin - Season 4 - Eps 1: The Darkest Hour (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.
About Merlin
Title: Merlin
First Air Date: 2008-09-20
Last Air Date: 2012-12-24
Status: Ended
Rating: 7.817/10 (from 1002 votes)
Language: EN
Seasons: 5
Total Episodes: 65
Network: BBC One
Genres: Action & Adventure, Drama, Sci-Fi & Fantasy
Production Companies: Shine TV
Synopsis
The unlikely friendship between Merlin, a young man gifted with extraordinary magical powers, and Prince Arthur, heir to the crown of Camelot.
Cast
Colin Morgan
Merlin
Angel Coulby
Gwen
Bradley James
Arturo Pendragon
Katie McGrath
Morgana
Richard Wilson
Gaius
John Hurt
Kilgharrah (voice)
Tom Hopper
Percival
Rupert Young
Leon
