MERLIN Series 5 Episode 7 Airs Saturday 17 November @ 8:00pm on BBCOne

Merlin S5 E7 "A Lesson in Vengeance" Synopsis:

Darkness steals into the very heart of Camelot, as Morgana and her puppet Queen hatch a sinister plan to murder the King.

But when stable hand Tyr Seward becomes caught in the crossfire, he threatens to ruin everything… As the plot thickens and reaches its deadly climax, can a suspicious Merlin unravel the truth before it’s too late?

Colin Morgan is Merlin, Bradley James is Arthur, Angel Coulby is Gwen, Katie McGrath is Morgana, Richard Wilson is Gaius and John Hurt is the voice of the Great Dragon. Tom Hopper, Rupert Young, Eoin Macken and Adetomiwa Edun return as The Knights of the Round Table. Special guest John Bradley as Tyr. Directed by Alice Troughton, written by Jake Michie.

John Bradley ('Samwell Tarly' in Game of Thrones) plays  'Tyr Seward' this week in Merlin S5E7 "A Lesson in Vengeance"

Merlin S5E7 "A Lesson in Vengeance" TRAILER

Merlin S5E7 "A Lesson in Vengeance" CLIP

Merlin S5E7 TEASERS:

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Merlin S5E7 PHOTOS:

Guest star Tony Guilfoyle