Cast in Order of Appearance: Colin Morgan (Merlin), John Hurt (Voice of the Dragon), Anthony Head (Uther Pendragon), Katie McGrath (Morgana), Eve Myles (Mary Collins / Lady Helen), Richard Wilson (Gaius), Caroline Faber (Hunith), Gary Oliver (Gregory), Bradley James (Arthur), Ed Coleman (Morris), Angel Coulby (Gwen), Louise Dylan (Bronwen)
Written By: Julian Jones
Directed By: James Hawes
Ep: 2
Valiant
Cast in Order of Appearance: John Hurt (Voice of the Dragon), Will Mellor (Knight Valiant), Andy Linden (Devlin), Nicholas Gasson (Steward), Colin Morgan (Merlin), Bradley James (Arthur), Richard Wilson (Gaius), Angel Coulby (Gwen), Katie McGrath (Morgana), Keith Thorne (Ewan), Anthony Head (Uther Pendragon), Ed Coleman (Morris)
Written By: Howard Overman
Directed By: James Hawes
Ep: 3
The Mark of Nimueh
Cast in Order of Appearance: John Hurt (Voice of the Dragon), Michelle Ryan (Nimueh), Colin Morgan (Merlin), Richard Wilson (Gaius), Angel Coulby (Gwen), David Durham (Tom), Katie McGrath (Morgana), Anthony Head (Uther Pendragon), Bradley James (Arthur), Rick English (The Afanc)
Written By: Julian Jones
Directed By: James Hawes
Ep: 4
The Poisoned Chalice
Cast in Order of Appearance: John Hurt (Voice of the Dragon), Michelle Ryan (Nimueh), Colin Morgan (Merlin), Anthony Head (Uther Pendragon), Bradley James (Arthur), Clive Russell (Bayard), Richard Wilson (Gaius), Angel Coulby (Gwen), Katie McGrath (Morgana), Gary Oliver (Gregory), Jamie Kenna (Dungeon Guard), Paul Kynman (Sir Cador)
Written By: Ben Vanstone
Directed By: Ed Fraiman
Ep: 5
Lancelot
Cast in Order of Appearance: John Hurt (Voice of the Dragon), Colin Morgan (Merlin), Santiago Cabrera (Lancelot), Richard Wilson (Gaius), Anthony Head (Uther Pendragon), Bradley James (Arthur), Michael Cronin (Geoffrey of Monmouth), Angel Coulby (Gwen), Katie McGrath (Morgana)
Written By: Jake Michie
Directed By: Ed Fraiman
Ep: 6
A Remedy to Cure All Ills
Cast in Order of Appearance: John Hurt (Voice of the Dragon), Julian Rhind-Tutt (Edwin), Katie McGrath (Morgana), Angel Coulby (Gwen), Richard Wilson (Gaius), Anthony Head (Uther Pendragon), Colin Morgan (Merlin), Bradley James (Arthur), Michael Cronin (Geoffrey of Monmouth)
Written By: Julian Jones
Directed By: Ed Fraiman
Ep: 7
The Gates of Avalon
Cast in Order of Appearance: John Hurt (Voice of the Dragon), Bradley James (Arthur), Holliday Grainger (Sophia), Katie McGrath (Morgana), Colin Morgan (Merlin), Kenneth Cranham (Aulfric), Ben Adams (Bandit), Anthony Head (Uther Pendragon), Richard Wilson (Gaius), Angel Coulby (Gwen), Michael Jenn (Sidhe Elder)
Written By: Ben Vanstone
Directed By: Jeremy Webb
Ep: 8
The Beginning of the End
Cast in Order of Appearance: John Hurt (Voice of the Dragon), Alun Kaglan (Cerdan), Asa Butterfield (Mordred), Michael Burgess (Stallholder), Jamie Kenna (Guard 1), Christian Bradley (Guard 2), Colin Morgan (Merlin), Katie McGrath (Morgana), Angel Coulby (Gwen), Bradley James (Arthur), Anthony Head (Uther Pendragon), Richard Wilson (Gaius), Trevor Sellers (Iseldir)
Written By: Howard Overman
Directed By: Jeremy Webb
Ep: 9
Excalibur
Cast in Order of Appearance: John Hurt (Voice of the Dragon), Michelle Ryan (Nimueh), Bradley James (Arthur), Anthony Head (Uther Pendragon), Katie McGrath (Morgana), Colin Morgan (Merlin), Angel Coulby (Gwen), Richard Wilson (Gaius), Rick English (Black Knight), Christopher Fairbank (Voice of the Black Knight), Kyle Redmond-Jones (Sir Owain), Sean Francis (Sir Pellinor), Michael Cronin (Geoffrey of Monmouth)
Written By: Julian Jones
Directed By: Jeremy Webb
Ep: 10
The Moment of Truth
Cast in Order of Appearance: John Hurt (Voice of the Dragon), Alexander Siddig (Kanen), Joe Dempsie (William), Jonathan Aris (Matthew), Richard Wilson (Gaius), Caroline Faber (Hunith), Colin Morgan (Merlin), Anthony Head (Uther Pendragon), Bradley James (Arthur), Katie McGrath (Morgana), Angel Coulby (Gwen)
Written By: Ben Vanstone
Directed By: David Moore
Ep: 11
The Labyrinth of Gedref
Cast in Order of Appearance: John Hurt (Voice of the Dragon), Bradley James (Arthur), Colin Morgan (Merlin), Frank Finlay (Anhora), Anthony Head (Uther Pendragon), Richard Wilson (Gaius), Angel Coulby (Gwen), Richard Riddell (Evan), Katie McGrath (Morgana)
Written By: Howard Overman
Directed By: Stuart Orme
Ep: 12
To Kill the King
Cast in Order of Appearance: John Hurt (Voice of the Dragon), David Durham (Tom), Angel Coulby (Gwen), Cal Macaninch (Tauren), Colin Morgan (Merlin), Bradley James (Arthur), Richard Wilson (Gaius), Katie McGrath (Morgana), Anthony Head (Uther Pendragon)
Written By: Jake Michie
Directed By: Stuart Orme
Ep: 13
Le Morte d'Arthur
Cast in Order of Appearance: John Hurt (Voice of the Dragon), Bradley James (Arthur), Colin Morgan (Merlin), Richard Wilson (Gaius), Anthony Head (Uther Pendragon), Katie McGrath (Morgana), Angel Coulby (Gwen), Michelle Ryan (Nimueh), Caroline Faber (Hunith)
