Cast in Order of Appearance: John Hurt (Voice of the Dragon), Simon Nehan (Tom), Bradley James (Arthur), Colin Morgan (Merlin), Richard Wilson (Gaius), Anthony Head (Uther Pendragon), Mackenzie Crook (Cedric), Katie McGrath (Morgana), Angel Coulby (Gwen), Luke Neal (Sir Geraint)
Written By: Julian Jones
Directed By: David Moore
Ep: 15
The Once and Future Queen
Cast in Order of Appearance: John Hurt (Voice of the Dragon), Fintan McKeown (King Odin), Jack Sandle (Kelda), Adrian Lester (Myror), Bradley James (Arthur), Colin Morgan (Merlin), Rupert Young (Sir Leon), Anthony Head (Uther Pendragon), Angel Coulby (Gwen), Alex Price (William), Richard Wilson (Gaius), Jai Armstrong (Guard No. 1), Mike Goddenough (Fyren), Katie McGrath (Morgana)
Written By: Howard Overman
Directed By: Jeremy Webb
Ep: 16
The Nightmare Begins
Cast in Order of Appearance: John Hurt (Voice of the Dragon), Katie McGrath (Morgana), Angel Coulby (Gwen), Colin Morgan (Merlin), Anthony Head (Uther Pendragon), Bradley James (Arthur), Richard Wilson (Gaius), Rupert Young (Sir Leon), Beth Cordingly (Forridel), Colin Salmon (Aglain), Asa Butterfield (Mordred)
Written By: Ben Vanstone
Directed By: Jeremy Webb
Ep: 17
Lancelot and Guinevere
Cast in Order of Appearance: John Hurt (Voice of the Dragon), Bradley James (Arthur), Katie McGrath (Morgana), Justin Avoth (Sir Robert), Angel Coulby (Gwen), Colin Morgan (Merlin), Michael Nardone (Kendrick), Michael Ballard (Bandit), Anthony Head (Uther Pendragon), Richard Wilson (Gaius), James Cosmo (Hengist), Santiago Cabrera (Lancelot)
Written By: Howard Overman
Directed By: David Moore
Ep: 18
Beauty and the Beast, Part One
Cast in Order of Appearance: John Hurt (Voice of the Dragon), Adam Godley (Jonas), Sarah Parish (Lady Catrina), Richard Wilson (Gaius), Colin Morgan (Merlin), Anthony Head (Uther Pendragon), Bradley James (Arthur), Katie McGrath (Morgana), Angel Coulby (Gwen), Rhys Rusbatch (Guard), Michael Cronin (Geoffrey of Monmouth)
Written By: Howard Overman
Directed By: David Moore
Ep: 19
Beauty and the Beast, Part Two
Cast in Order of Appearance: John Hurt (Voice of the Dragon), Sarah Parish (Lady Catrina), Adam Godley (Jonas), Anthony Head (Uther Pendragon), Bradley James (Arthur), Richard Wilson (Gaius), Rupert Young (Sir Leon), Colin Morgan (Merlin), Angel Coulby (Gwen), Rhys Rusbatch (Guard), Brian Peck (Eldred), Michael Cronin (Geoffrey of Monmouth), Katie McGrath (Morgana)
Written By: Ben Vanstone
Directed By: Metin Hüseyin
Ep: 20
The Witchfinder
Cast in Order of Appearance: John Hurt (Voice of the Dragon), Colin Morgan (Merlin), Victoria Finney (Cathryn), Anthony Head (Uther Pendragon), Bradley James (Arthur), Katie McGrath (Morgana), Richard Wilson (Gaius), Charles Dance (Aredian), Angel Coulby (Gwen), Katie Foster-Barnes (Beatrice), Amanda Fairbank Hynes (Annis), Samara MacLaren (Rowena), Rupert Young (Sir Leon), David Sterne (The Apothecary)
Written By: Jake Michie
Directed By: Jeremy Webb
Ep: 21
The Sins of the Father
Cast in Order of Appearance: John Hurt (Voice of the Dragon), Emilia Fox (Morgause), Anthony Head (Uther Pendragon), Bradley James (Arthur), Katie McGrath (Morgana), Richard Wilson (Gaius), Angel Coulby (Gwen), Colin Morgan (Merlin), Michael Cronin (Geoffrey of Monmouth), Alice Patten (Ygraine), Rhys Rusbatch (Guard), Rupert Young (Sir Leon)
Written By: Howard Overman
Directed By: Metin Hüseyin
Ep: 22
The Lady of the Lake
Cast in Order of Appearance: John Hurt (Voice of the Dragon), Richard Ridings (Halig), Laura Donnelly (Freya), Richard Wilson (Gaius), Colin Morgan (Merlin), Bradley James (Arthur), Anthony Head (Uther Pendragon), Angel Coulby (Gwen)
Written By: Julian Jones
Directed By: Metin Hüseyin
Ep: 23
Sweet Dreams
Cast in Order of Appearance: John Hurt (Voice of the Dragon), Bradley James (Arthur), Anthony Head (Uther Pendragon), David Schofield (King Alined), Kevin Eldon (Trickler), Mark Lewis Jones (King Olaf), Georgia Moffett (Lady Vivian), Angel Coulby (Gwen), Colin Morgan (Merlin), Katie McGrath (Morgana), Richard Wilson (Gaius)
Written By: Lucy Watkins
Directed By: Alice Troughton
Ep: 24
The Witch's Quickening
Cast in Order of Appearance: John Hurt (Voice of the Dragon), Jonathan Bryan (Sir Radnor), Joseph Mawle (Alvarr), Emily Beecham (Emmyria), Asa Butterfield (Mordred), Chris McGill (Guard), Colin Morgan (Merlin), Katie McGrath (Morgana), Bradley James (Arthur), Richard Wilson (Gaius), Anthony Head (Uther Pendragon), Angel Coulby (Gwen)
Written By: Jake Michie
Directed By: Alice Troughton
Ep: 25
The Fires of Idirsholas
Cast in Order of Appearance: John Hurt (Voice of the Dragon), Emilia Fox (Morgause), Jem Wall (Joseph), Anthony Head (Uther Pendragon), Richard Wilson (Gaius), Bradley James (Arthur), Colin Morgan (Merlin), Katie McGrath (Morgana), Angel Coulby (Gwen), Rupert Young (Sir Leon)
Written By: Julian Jones
Directed By: Jeremy Webb
Ep: 26
The Last Dragonlord
Cast in Order of Appearance: John Hurt (Voice of the Dragon), Bradley James (Arthur), Richard Wilson (Gaius), Angel Coulby (Gwen), Colin Morgan (Merlin), Rupert Young (Sir Leon), Anthony Head (Uther Pendragon), Jonathan Coyne (Asgerd), Alexander Delamere (Innkeeper), John Lynch (Balinor)
