Season 4, Episode 1 The Darkest Hour
First Aired: January 6, 2012
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.
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Guest Cast
Santiago Cabrera
Sir Lancelot
Tom Hopper
Sir Percival
Emilia Fox
Morgause
James Greene
Ferryman
Gemma Jones
The Cailleach
Eoin Macken
Sir Gwaine
Cast & Details See all »
- Premiered: September 20, 2008
- Rating: TV-PG
- 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. (more)
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