Cast in Order of Appearance: John Hurt (Voice of the Dragon), Bradley James (Arthur), Colin Morgan (Merlin), Anthony Head (Uther Pendragon), Richard Wilson (Gaius), Katie McGrath (Morgana), Angel Coulby (Gwen), Rupert Young (Sir Leon), Emilia Fox (Morgause), Alice Patten (Ygraine), Matthew Barker (Guard), Tom Ellis (Cenred), Jake Phillips (Ghost Boy)
Written By: Julian Jones
Directed By: Jeremy Webb
Ep: 28
The Tears of Uther Pendragon, Part Two
Cast in Order of Appearance: John Hurt (Voice of the Dragon), Colin Morgan (Merlin), Bradley James (Arthur), Richard Wilson (Gaius), Katie McGrath (Morgana), Rupert Young (Sir Leon), Anthony Head (Uther Pendragon), Alice Patten (Ygraine), Jake Phillips (Ghost Boy), Emilia Fox (Morgause), Angel Coulby (Gwen), Tom Ellis (Cenred)
Written By: Julian Jones
Directed By: Jeremy Webb
Ep: 29
Goblin's Gold
Cast in Order of Appearance: John Hurt (Voice of the Dragon), Michael Cronin (Geoffrey of Monmouth), Colin Morgan (Merlin), Mark Williams (Voice of the Goblin), Bradley James (Arthur), Angel Coulby (Gwen), Richard Wilson (Gaius), Anthony Head (Uther Pendragon), Duncan Meadows (Ewan), Katie McGrath (Morgana), Simon Nehan (Tom), Gemma Arrowsmith (Rose), Rupert Young (Sir Leon)
Written By: Howard Overton
Directed By: Jeremy Webb
Ep: 30
Gwaine
Cast in Order of Appearance: John Hurt (Voice of the Dragon), Bradley James (Arthur), Colin Morgan (Merlin), Sarah Counsell (Mary), Andrew Vincent (Dagr), Shend (Ebor), Eoin Macken (Gwaine), Richard Wilson (Gaius), Bill Thomas (Cylferth), Angel Coulby (Gwen), Philip Brodie (Sir Ethan), John Hopkins (Sir Oswald), Jonathan Emmett (Inn Keeper), Anthony Head (Uther Pendragon), Katie McGrath (Morgana), Rupert Young (Sir Leon)
Written By: Julian Jones
Directed By: David Moore
Ep: 31
The Crystal Cave
Cast in Order of Appearance: John Hurt (Voice of the Dragon), Colin Morgan (Merlin), Bradley James (Arthur), Karl Johnson (Taliesin), Anthony Head (Uther Pendragon), Katie McGrath (Morgana), Angel Coulby (Gwen), Richard Wilson (Gaius), Emilia Fox (Morgause)
Written By: Julian Jones
Directed By: Alice Troughton
Ep: 32
The Changeling
Cast in Order of Appearance: John Hurt (Voice of the Dragon), Michael Jenn (Sidhe Elder), Georgia King (Princess Elena), Simon Williams (Lord Godwyn), Miriam Margolyes (Grunhilda), Bradley James (Arthur), Colin Morgan (Merlin), Anthony Head (Uther Pendragon), Angel Coulby (Gwen), Katie McGrath (Morgana), Richard Wilson (Gaius), Michael Cronin (Geoffrey of Monmouth)
Written By: Lucy Watkins
Directed By: David Moore
Ep: 33
The Castle of Fyrien
Cast in Order of Appearance: John Hurt (Voice of the Dragon), Katie McGrath (Morgana), Angel Coulby (Gwen), Jody Halse (Fermin), Colin Morgan (Merlin), Bradley James (Arthur), Anthony Head (Uther Pendragon), Adetomiwa Edun (Elyan), Emilia Fox (Morgause), Tom Ellis (Cenred), Richard Wilson (Gaius)
Written By: Jake Michie
Directed By: David Moore
Ep: 34
The Eye of the Phoenix
Cast in Order of Appearance: John Hurt (Voice of the Dragon), Bradley James (Arthur), Colin Morgan (Merlin), Angel Coulby (Gwen), Anthony Head (Uther Pendragon), Richard Wilson (Gaius), Katie McGrath (Morgana), Emilia Fox (Morgause), Eoin Macken (Gwaine), Ian Peck (Alfhild), Warwick Davis (Grettir), Donald Sumpter (The Fisher King)
Written By: Julian Jones
Directed By: Alice Troughton
Ep: 35
Love in the Time of Dragons
Cast in Order of Appearance: John Hurt (Voice of the Dragon), Pauline Collins (Alice), Eddie Marsan (Voice of the Manticore), Anthony Head (Uther Pendragon), Richard Wilson (Gaius), Colin Morgan (Merlin), Bradley James (Arthur), Calum MacPherson (Evoric), Michael Cronin (Geoffrey of Monmouth)
Written By: Jake Michie
Directed By: Alice Troughton
Ep: 36
Queen of Hearts
Cast in Order of Appearance: John Hurt (Voice of the Dragon), Angel Coulby (Gwen), Bradley James (Arthur), Colin Morgan (Merlin), Katie McGrath (Morgana), Emilia Fox (Morgause), Anthony Head (Uther Pendragon), Richard Wilson (Gaius)
Written By: Howard Overman
Directed By: Ashley Way
Ep: 37
The Sorcerer's Shadow
Cast in Order of Appearance: John Hurt (Voice of the Dragon), Harry Melling (Gilli), Ian Burfield (Nollar), Paul McNeilly (Tindr), Colin Morgan (Merlin), Bradley James (Arthur), Calum MacPherson (Evoric), Katie McGrath (Morgana), Anthony Head (Uther Pendragon), Richard Wilson (Gaius)
Written By: Julian Jones
Directed By: Ashley Way
Ep: 38
The Coming of Arthur, Part One
Cast in Order of Appearance: John Hurt (Voice of the Dragon), Rupert Young (Sir Leon), Anthony Head (Uther Pendragon), Bradley James (Arthur), Richard Wilson (Gaius), Colin Morgan (Merlin), Trevor Sellers (Iseldir), Katie McGrath (Morgana), Emilia Fox (Morgause), Tom Ellis (Cenred), Grahame Fox (Rider), Eoin Macken (Gwaine), Ralph Ineson (Jarl), Matthew Craeford (Bandit), Raul Griffiths (Druid Boy), Angel Coulby (Gwen), Adetomiwa Edun (Elyan), Michael Cronin (Geoffrey of Monmouth)
Written By: Jake Michie
Directed By: Jeremy Webb
Ep: 39
The Coming of Arthur, Part Two
Cast in Order of Appearance: John Hurt (Voice of the Dragon), Rupert Young (Sir Leon), Katie McGrath (Morgana), Emilia Fox (Morgause), Angel Coulby (Gwen), Colin Morgan (Merlin), Eoin Macken (Gwaine), Richard Wilson (Gaius), Adetomiwa Edun (Elyan), Bradley James (Arthur), Anthony Head (Uther Pendragon), Laura Donnelly (Freya), Santiago Cabrera (Lancelot), Tom Hopper (Percival)
