Series 4



The fourth series of Merlin started airing on 1 October 2011 weekly at 7.50 on BBC One and BBC One HD. The series was originally cut to ten episodes from the previous series' 13 due to financial issues. However, Johnny Capps revealed on 18 March 2011 that the show has been increased to its original 13 weekly episodes, opening with a two-parter. Filming started in mid-March 2011 in Cardiff, Wales and Pierrefonds, France. This season is said to be darker and more mature, as the previous three had a few violent scenes, this one having much more. Most characters will show a darker side to their personality. The official tagline for the fourth series is: The Darkest Hour Is Just Before The Dawn. At the SDCC Merlin Panel, it was confirmed that due to the show's increasing popularity, a fifth season has been commissioned by the BBC, and is likely to air the same time next year.

Trailer
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Sypnosis
With Uther a shadow of his former self and unable to rule Camelot, it comes up to Merlin and Arthur to protect the kingdom from any possible threat and enemy.

Meanwhile, Morgana continues to take revenge on Camelot and Agravaine, an uncle of Arthur(brother of Igraine), arrives to support him but is he a relative to be trusted?

Other Previews

 * Official Poster from Comic-Con: here.
 * Official Bloopers shown at Comic-Com here.
 * Spoilers revealed at Comic-Con here.
 * BBC Official Merlin Series 4 Teaser here.
 * Full T4 Interview showing briefly high quality clips from Merlin Comic con 2011 here.
 * Another trailer here.
 * First preview clip from "The Darkest Hour" here.
 * Another clip from "The Darkest Hour" here.
 * Extended preview scene from "The Darkest Hour" here.
 * Sneak Peak from 'The Darkest Hour Part 2" at http://www.youtube.com/watch?v=Kqfv93jFbrU
 * Sneak Peak from "The Wicked Day" at http://www.youtube.com/watch?v=RmJStj7Ddzw
 * Official BBC Trailer "Aithusa" at http://www.youtube.com/watch?v=CMhHDYYroRM

Main Cast

 * Colin Morgan as Merlin/Emrys/Dragoon
 * Bradley James as Arthur Pendragon
 * Angel Coulby as Guinevere
 * Katie McGrath as Morgana Pendragon
 * Anthony Head as Uther Pendragon (Episode 1 - 3)
 * Richard Wilson as Gaius
 * John Hurt as the voice of Kilgharrah the Great Dragon

Recurring Cast

 * Eoin Macken as Sir Gwaine
 * Santiago Cabrera as Sir Lancelot (Episode 1 and 2) (Will appear in later episode)
 * Tom Hopper as Percival
 * Rupert Young as Sir Leon
 * Adetomiwa Edun as Elyan
 * Emilia Fox as Morgause (Episode 1)
 * Michael Cronin as Geoffrey of Monmouth (episode 2 and 3)
 * Trevor Sellers as Iseldir (Episode 4)

Rumoured Cast

 * David Schofield as Alined
 * Georgia Moffett as Lady Vivian
 * Joseph Mawle as Alvarr
 * Caroline Faber as Hunith
 * Harry Melling as Gilli
 * Warwick Davis as Grettir
 * Laura Donnelly as Freya
 * Alice Patten as Ygraine Pendragon
 * Michelle Ryan as Nimueh

New Cast

 * Nathaniel Parker as Agravaine (appears in all 13 episodes)
 * Gemma Jones as The Cailleach (episode 1 & 2, The Darkest Hour)
 * James Greene as Ferryman (ep. 1 & 2)
 * Anya Beth Davies as a girl who is rescued by Percival (ep. 1)
 * Charlie Petryszyn as rescued child by Percival (ep. 1)
 * William Rowlands as rescued child by Percival (ep. 1)
 * Zee Asha as Audrey (ep. 1, cook)
 * Katie Moore as Drea (ep. 1)
 * Sarah Beck Mather as Vilia (ep. 2, spirits of brooks and streams)
 * Phil Davis as The Gleeman (episode 3, The Wicked Day)
 * Phil Holden as Geldred (episode 3)
 * Kyle Lima as Guard (episode 3)
 * James Callis as Julius Borden (episode 4, Aithusa)
 * Lindsay Duncan as Queen Annis (episode 5)
 * Janet Montgomery as a visiting princess to Camelot (ep. 11)
 * Miranda Raison as Isolde (ep. 12 & 13)
 * Ben Daniels as Tristan (ep. 12 & 13)


 * Charlenne MacKenna as Lamia
 * Hayley Bishop as Caelia
 * Sinora Maria as Queen Laila
 * Steven Hartley as King Carleon
 * Emma Tainton as Servant
 * Andrew Fowler as Knight of Camelot
 * Zig Byfield as Goron
 * Terence Maynard as Helios
 * Gary Lewis as sorcerer
 * Wayne Foskett as John Howden
 * Paul Kynman as Sir Cador
 * Maureen Carr as Dochraid (ghoul who lives in Camelot)
 * Tom Meredith as Eoghan

Episodes
Please put only officially released synopses in the episode description fields. You can find them here, new ones will be released every Thursday from now on until the series ends.