Merlin Episode: "The Darkest Hour"

Season 4, Episode 1
Episode Synopsis: Part 1 of 2. In the Season 4 premiere, Morgana summons Callieach (Gemma Jones) to rip apart the fabric between the worlds of the living and dead, unleashing creatures that kill anyone whom they touch. Arthur and his knights set out to save the kingdom while Merlin attempts to return order to the world. Original Air Date: Jan 6, 2012
Guest Cast Gemma Jones: The Cailleach Emilia Fox: Morgause Tom Hopper: Sir Percival Santiago Cabrera: Sir Lancelot James Greene: Ferryman
Full Episode
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Season 4, Episode 1
When Morgana wrenches open the gates to the Other World, only one thing is certain – nothing...
Free | Hulu
Length: 43:53
Aired: 1/6/2012
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Premiered: April 02, 2010, on SyFy
Rating: TV-PG
User Rating: (864 ratings)
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Premise: A retelling of the Arthurian legend that centers on Merlin, a young wizard new to Camelot, a kingdom ruled by a tyrant who's banned the use of magic.

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