The BEST episodes of Merlin season 4

Every episode of Merlin season 4, ranked from best to worst by thousands of votes from fans of the show. The best episodes of Merlin season 4!

Merlin is a drama series based around the legends of the mythical wizard and his relationship with Prince Arthur. Set in the early days of their relationship, it shows the development of each in his respective field, finding his way on the path to future greatness. Humour, danger and excitement abound, accompanied by mythical creatures, magic and of course much medieval swashbuckling.

Last Updated: 2/20/2024Network: BBC OneStatus: Ended
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The Sword in the Stone (2)
star
8.32
1687 votes

#1 - The Sword in the Stone (2)

Season 4 - Episode 13 - Aired 12/24/2011

Morgana and Helios have successfully captured Camelot, and Merlin and Arthur are outlaws on the run, in the last episode in this season of Merlin. Trapped in Ealdor with a ruthless army closing in, their situation becomes desperate. Arthur must take control before Camelot is lost forever… But faced with Agravaine’s betrayal and the strength of Morgana’s force, the young King has lost his conviction. Only Merlin can restore his faith, and only an extraordinary act can prove to the King that he was born to rule. Will the young warlock convince Arthur before his dreams of Albion fall to pieces?

Directors: Alice Troughton
Writer: Julian Jones
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The Sword in the Stone (1)
star
8.05
1679 votes

#2 - The Sword in the Stone (1)

Season 4 - Episode 12 - Aired 12/17/2011

Morgana is now the head of a vast Southron army and a deadly net is closing around Camelot. After the sorceress strikes everyone is forced to run for their lives including Arthur. It is down to Merlin to try and save Arthur from Morgana's clutches.

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The Darkest Hour (2)
star
7.88
1646 votes

#3 - The Darkest Hour (2)

Season 4 - Episode 2 - Aired 10/8/2011

The kingdom is on the brink of collapse and Morgana poised to strike, in the final part of this opening episode of the fantasy drama. As Lancelot races back to Camelot with the dying Merlin, Arthur must continue on his mission to vanquish the Dorocha without them. Though the Knights know their journey to the Isle of the Blessed is fraught with danger, none could anticipate the sacrifice Arthur intends to make there. Friendship and loyalty are tested to the limit, but in the end, it's the power of love that changes all their lives for ever.

Directors: Alice Troughton
Writer: Julian Jones
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The Secret Sharer
star
7.83
1642 votes

#4 - The Secret Sharer

Season 4 - Episode 7 - Aired 11/12/2011

Morgana joins forces with enigmatic wizard Alator to uncover a secret that could change the course of destiny, as the magical drama continues. With allies on both sides of the castle walls, can anyone stop her before Merlin's greatest secret is revealed?

Writer: Julian Jones
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The Hunter's Heart
star
7.82
1667 votes

#5 - The Hunter's Heart

Season 4 - Episode 11 - Aired 12/10/2011

Morgana ends up discovering a powerful ally in the Southron warlord Helios and they come up with the perfect plan to bring Camelot to its knees. With Arthur preoccupied by the beautiful Princess Mithian, it ends up falling to an absent friend to raise the alarm.

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The Darkest Hour (1)
star
7.79
1766 votes

#6 - The Darkest Hour (1)

Season 4 - Episode 1 - Aired 10/1/2011

Evil sorceress Morgana summons mighty gatekeeper the Cailleach, who opens a door to another world from which hellish creatures pour forth. As Arthur and his loyal knights take up arms, Merlin discovers the only thing that will stop them is an unimaginable sacrifice.

Directors: Alice Troughton
Writer: Julian Jones
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Aithusa
star
7.78
1592 votes

#7 - Aithusa

Season 4 - Episode 4 - Aired 10/22/2011

A mysterious visitor arrives in Camelot seeking a very special prize: a dragon's egg.

Directors: Alex Pillai
Writer: Julian Jones
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A Servant of Two Masters
star
7.71
1535 votes

#8 - A Servant of Two Masters

Season 4 - Episode 6 - Aired 11/5/2011

Merlin becomes a deadly weapon in Morgana's fight for supremacy when he falls into her hands. By recurring to ancient magic, she manages to turn friend against friend and creates the perfect assassin out of the young sorcerer which puts an oblivious King Arthur in great danger. Will anyone notice Merlin's unusual behaviour before he is able to do any serious harm to the King?

Directors: Alex Pillai
Writer: Lucy Watkins
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A Herald of the New Age
star
7.66
1555 votes

#9 - A Herald of the New Age

Season 4 - Episode 10 - Aired 12/3/2011

The Camelot Knights stumble across an eerie shrine deep in the forest, its chilling atmosphere betraying a dark history best left undisturbed, as the magical drama continues. But when Elyan ignores Merlin's warning, his actions spark a chain of events more frightening than anyone could possibly have imagined... Can a grievous wrong be put right? Or will past demons change the future forever?

Directors: Jeremy Webb
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Lancelot du Lac
star
7.64
1669 votes

#10 - Lancelot du Lac

Season 4 - Episode 9 - Aired 11/26/2011

When Sir Lancelot returns from the dead, old feelings reignite, as the drama continues. Gwen must fight temptation before she commits an unspeakable act of betrayal; one that would destroy the legacy of Camelot forever. With heads and hearts thrown into turmoil, Merlin becomes suspicious. Can a man really defy death, or is there something more sinister at play?

Writer: Lucy Watkins
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His Father's Son
star
7.63
1604 votes

#11 - His Father's Son

Season 4 - Episode 5 - Aired 10/29/2011

Arthur faces his first true test as King when he incurs the wrath of the formidable Queen Annis. With the lives of thousands hanging in the balance, Arthur must find the strength to be his own man and become the leader Camelot so desperately needs.

Directors: Alex Pillai
Writer: Jake Michie
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The Wicked Day
star
7.60
1738 votes

#12 - The Wicked Day

Season 4 - Episode 3 - Aired 10/15/2011

The mighty citadel is buzzing in anticipation of the Prince's birthday celebrations, as the fantasy drama continues. But Arthur's old adversary, Odin, promises to ensure this is one party Camelot will never forget - for among the assembling guests lurks a deadly assassin set to strike. As the dust settles, Camelot is left devastated. Just how far is Merlin prepared to go to put things right; would he really risk everything and reveal his secret?

Directors: Alice Troughton
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Lamia
star
7.52
1596 votes

#13 - Lamia

Season 4 - Episode 8 - Aired 11/19/2011

A mysterious illness draws Merlin to a distant village. But it soon becomes clear that there is more at stake than just his patients' well-being as something sinister turns the air sour. Far from home and with no-one to trust, Merlin becomes embroiled in a deadly game of cat and mouse. No longer sure who is the hunter and who is the hunted, can the young warlock survive long enough to uncover the truth?

Writer: Jake Michie
Watch Now:AmazonApple TV