5,468 votes


BBC One 2008

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.

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The 10 Worst Episodes of Merlin

Merlin - S2E5

#1 - Beauty and the Beast (1)


Season 2 - Episode 5

Lady Catrina and her strange servant Jonas arrive in Camelot, where they are welcome to stay by a most delighted king Uther, who becomes captivated by his latest guest. Arthur, on the contrary, far from sharing his father's enthusiasm and in the sight of the flirting going on, is pretty appalled with the situation. Merlin and Gaius have the feeling that she is not what she seems and their suspicions are proven true when Merlin discovers that Lady Catrina is a troll and that unfortunately, her intentions are far beyond the prize of a king's heart. Horrified, he reveals the truth to Arthur, who doesn't believe him. Merlin embarks in the task of proving the real nature of the woman while at the same time saving Uther from ruin and Camelot from fall. Will the young warlock be able to overcome the powerful magic of the troll before it's too late?

The episode was rated #1 Worst episode of Merlin from 295 votes.

Merlin - S2E6

#2 - Beauty and the Beast (2)


Season 2 - Episode 6

Lady Catrina has now been crowned and is now known as Queen Catrina. She accuses Merlin of stealing and he is driven into hiding, and must now find a way to expose her true form.

The episode was rated #2 Worst episode of Merlin from 296 votes.

Merlin - S1E2

#3 - Valiant


Season 1 - Episode 2

Camelot is hosting its annual sword tournament and knights from throughout the realm have come to complete for its coveted title. Amongst those hoping to win the crown is Knight Valiant.

The episode was rated #3 Worst episode of Merlin from 484 votes.

Merlin - S3E7

#4 - The Castle of Fyrien


Season 3 - Episode 7

Gwen faces an impossible dilemma when she is forced to choose between saving the life of Elyan, her estranged brother and only sibling or Arthur's, Camelot's prince and the love of her life. When one of them is certain to find death at the hands of Cenred, who will Gwen choose? Once again, loyalty, love and friendships are tested to the limit as Arthur, Merlin and Gwen are forced to put their minds together to try and find a way out of the cruel quandary. Morgana and Morgause, in turn, will do their best ruin their plans. Will good conquer evil or will Gwen end up losing someone she loves again?

The episode was rated #4 Worst episode of Merlin from 263 votes.

Merlin - S3E9

#5 - Love in the Time of Dragons


Season 3 - Episode 9

An old flame of Gaius' arrives in Camelot under the influence of a Manticore.

The episode was rated #5 Worst episode of Merlin from 246 votes.

Merlin - S5E6

#6 - The Dark Tower


Season 5 - Episode 6

When Gwen is snatched from Camelot without warning, Merlin knows there can be only one person responsible: Morgana. Arthur is determined to rescue his Queen โ€“ but it's not going to be easy, for she is locked in the Dark Tower, a place that haunts the dreams of men. Arthur and his Knights must embark on a quest like no other, battling through a landscape riddled with hidden dangers, perilous obstacles and magical beings. As they near their goal, Merlin's sense of dread reaches breaking point. What twisted game is Morgana playing? And more importantly, just what is the final test that awaits them in the tower?

The episode was rated #6 Worst episode of Merlin from 339 votes.

Merlin - S3E6

#7 - The Changeling


Season 3 - Episode 6

Uther pressures Arthur into an arranged marriage with a visiting princess, Elena, though Merlin soon has reservations after discovering that Elena may not exactly be who she claims to be. As he tries to uncover the princess' dark secret, he learns that Elena's nanny is a Pixie. But what are their motivations? Who do they work for? And most important of all, what benefit do they get from her marriage to Arthur, the heir to the throne of Camelot? Will Merlin be able to get to the bottom of it all and prevent Arthur from making the biggest mistake of his life?

The episode was rated #7 Worst episode of Merlin from 264 votes.

Merlin - S1E3

#8 - The Mark of Nimueh


Season 1 - Episode 3

A deadly plague spreads through Camelot. When it seems that sorcery can be the only possible explanation, Merlin and Gaius race to find a cure, while Gwen is arrested and sentenced to death for practising witchcraft.

The episode was rated #8 Worst episode of Merlin from 415 votes.

Merlin - S1E1

#9 - The Dragon's Call


Season 1 - Episode 1

Merlin is told by the Great Dragon that it is his destiny to make sure that the young Prince Arthur is kept safe. Anybody caught performing magic is punished with death and Merlin is not a fan of Arthur. When Arthur's life is endangered Merlin finds himself tested.

The episode was rated #9 Worst episode of Merlin from 625 votes.

Merlin - S2E4

#10 - Lancelot and Guinevere


Season 2 - Episode 4

Gwen is mistaken for Morgana and kidnapped by the savage outlaw Hengist. Uther refuses to pay her ransom, so Arthur defies his father and heads out into dangerous enemy territory to fight for Gwen's freedom. Merlin suspects Arthur's devotion to Gwen is more than that of a prince to one of his subjects. How will Arthur react when he discovers Gwen is not alone in Hengist's castle? She and Lancelot have found each other again, and powerful feelings rekindle.

The episode was rated #10 Worst episode of Merlin from 301 votes.

Merlin - S1E7
#11 - The Gates of Avalon
Season 1 - Episode 7

Arthur's chivalry leads to danger when he comes to the rescue of Sophia, a damsel in distress, and her father, Aulfric. When Sophia uses more than just her feminine charms to take control of Arthur's heart...

The episode was rated #1 Worst episode of Merlin from 349 votes.

Merlin - S1E6
#12 - A Remedy To Cure All Ills
Season 1 - Episode 6

When the Lady Morgana is struck down with a mysterious illness, Gaius is at a loss for a cure. Thankfully a new physician, Edwin Muirden is on hand to bring the King's ward back from the brink.

The episode was rated #2 Worst episode of Merlin from 352 votes.

Merlin - S2E1
#13 - The Curse of Cornelius Sigan
Season 2 - Episode 1

New servant Cedric muscles in on Merlin's position as Arthur's right-hand man, and turns the prince against his loyal friend. Merlin is convinced the slippery newcomer is up to something, and he is right - Cedric is a conman and a thief who is after a magnificent jewel, recently unearthed in a tomb far beneath Camelot. Little does he know, his precious prize is more dangerous than he could possibly imagine. Camelot has never been more vulnerable, but how can Merlin make things right when, thanks to Cedric, he might have lost Arthur's friendship for good? Merlin faces the prospect of turning to the one creature he swore he would never trust again - The Great Dragon.

The episode was rated #3 Worst episode of Merlin from 312 votes.

Merlin - S3E11
#14 - The Sorcerer's Shadow
Season 3 - Episode 11

Camelot's legendary tournament only has one rule: there are no rules whatsoever. Terrifying warriors start to fill the mythical city, Gilli between them. Despite his small stature, Gilli is ready to join the action and committed to achieve victory with a secret weapon to help him: magic. When Gilli begins to realise the full extent of his powers, Merlin becomes torn since his new friend is putting his own life in danger as well as threatening the very heart of Camelot with his actions. Will Merlin be able to make Gilli see sense before it's too late?

The episode was rated #4 Worst episode of Merlin from 253 votes.

Merlin - S2E10
#15 - Sweet Dreams
Season 2 - Episode 10

Peace talks are held at Camelot when dignitaries from rival kingdoms arrive. King Alined is determined there will be no peace though and will use magic to make sure his wishes happen.

The episode was rated #5 Worst episode of Merlin from 263 votes.

Merlin - S1E4
#16 - The Poisoned Chalice
Season 1 - Episode 4

With her sights set firmly on Merlin, Nimueh tricks him into drinking from a poisoned chalice, and he falls dangerously ill. Arthur ventures forth deep into the forest of Balor to find the antidote, but little does he know that he's walking into a trap.

The episode was rated #6 Worst episode of Merlin from 404 votes.

Merlin - S5E3
#17 - The Death Song of Uther Pendragon
Season 5 - Episode 3

When a stranger gives Arthur the power to summon the dead, the king finds himself torn between head and heart. Unable to resist temptation, he seizes the chance to speak to the person he misses most โ€“ his father, Uther Pendragon. But the spirit world is a dark and dangerous place, for little does Arthur realize that his decision comes at a terrible price. Against all odds, Merlin must put right Arthur's mistake before Camelot, and everything they have built, is destroyed forever.

The episode was rated #7 Worst episode of Merlin from 341 votes.

Merlin - S4E9
#18 - Lancelot du Lac
Season 4 - Episode 9

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?

The episode was rated #8 Worst episode of Merlin from 292 votes.

Merlin - S4E8
#19 - Lamia
Season 4 - Episode 8

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?

The episode was rated #9 Worst episode of Merlin from 278 votes.

Merlin - S1E8
#20 - The Beginning of the End
Season 1 - Episode 8

Merlin finds himself becoming friends with Morgana when he helps a boy stay hidden. The two of them try to get the boy back whence he came, but things turn bad when Uther announces that anyone helping the boy will be executed.

The episode was rated #10 Worst episode of Merlin from 347 votes.

Last updated: mar 03, 2021



Thank you Merlin.


This is a decent show...not really good but cheesy good. There are some parts that are fantastic and some parts that are subpar so it evens out to a decent show. Anthony Stewart Head as Uther is probably the best part of this show, he is a rock solid actor. This show had so much potential with having them the same age, they could have done SOOOO MUCH but they chose to ignore pretty much all of that potential. With that said, the series finale is INCREDIBLY AWFUL so it tainted the show for me so I would suggest just skip the last episode.


I agree with the other comments about the series finale. Skip it if you want to end the show on a good note. I LOVED this show because of the two leads. Not every episode was amazing, but there were real gems in there. They could have really done something different with the ending; it left me with a sour taste in my mouth... That said, I still recommend the rest of the series. It's one of my all-time favourites.


So painful to say goodbye. What an amazing series! Oh great. I'm crying again.


super amazing!


when i first started watching merlin i was just curious but now i cant wait till next season recommend this to anyone who would like to have another view at how king arthur became the man he was (in this tale ofcourse :) )


The weird thing about this show is that it is so awfully written, yet the humor is amazing.


@rottnkorpse .. I thought the whole series was pretty awesome, and I loved the way year by year it grew, as the characters grew! Everything about it was excellent! However, I don't agree about the last episode. Yes, I was disappointed, but only because I knew it was over! It was pretty much the way I would expect an incredible series like "Merlin" to end! I really wish it wasn't over!!


The early seasons were pretty great but it got progressively worse until I gave up, halfway through season 5. I hear I didn't miss much. Loved the dynamic between Arthur and Merlin though and am angry that they didn't do more with this show. If I had stopped at season 1 or 2 I would have probably given this an 8.


Series is decent but plots keep repeating. Everytime there's another infiltrator.

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