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13 Episodes
S4 E1 - The Darkest Hour (1)
S4 E2 - The Darkest Hour (2)
S4 E3 - The Wicked Day
S4 E4 - Aithusa
S4 E5 - His Father's Son
S4 E6 - A Servant of Two Masters
S4 E7 - The Secret Sharer
S4 E8 - Lamia
S4 E9 - Lancelot du Lac
S4 E10 - A Herald of the New Age
S4 E11 - The Hunter's Heart
S4 E12 - The Sword in the Stone (1)
S4 E13 - The Sword in the Stone (2)
Streaming, rent, or buy Merlin – Season 4:
Currently you are able to watch "Merlin - Season 4" streaming on Amazon Prime Video.
Synopsis
Merlin is bac for a fourth series, with Camelot standing on the brink of a golden age. But its birth will not be an easy one, for the forces of evil are gathering and the darkest hour is just before the dawn...
