Merlin

New servant, Cedric (Mackenzie Crook), 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's right -- Cedric is a conman and a thief who's after a magnificent jewel recently unearthed in a tomb far beneath Camelot. Little does Cedric 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 creature he swore he'd never trust again - The Great Dragon.

Merlin helps Arthur disguise his identity to enter a jousting tournament, little knowing that a deadly assassin has arrived in Camelot to kill the Prince

When Morgana begins to fear she might have magic, Merlin puts both their lives at risk to get her the help she needs.

When Gwen is kidnapped Arthur defies the King to go to her rescue, but someone else gets there first: Lancelot.

Uther is delighted when the Lady Catrina arrives in Camelot but Merlin is concerned, fearing their new guest is actually a troll.

Merlin must reveal that Camelot’s new Queen is a troll before she destroys the kingdom.

Uther summons a witchfinder to Camelot to root out magic once and for all. Will Merlin and Morgana be sent to the flames?

A mysterious warrior arrives in Camelot, sending Arthur on a quest that could change his life forever.

Merlin meets a kindred spirit but his new friendship is threatened when a deadly magical beast attacks Camelot.

Camelot is thrown into chaos when a rival king puts a spell on Arthur in an attempt to start war.

Merlin sees a shocking new side to Morgana when Mordred returns to Camelot asking for her help.

As Morgause and her inhuman Knights attack a helpless Camelot, Merlin’s loyalties are stretched to the limit.

When the Great Dragon attacks Camelot, Merlin must go on an epic journey to find the one man who can defeat the monster.