Merlin Series 5 Pictures Released

Three years on from the end of Series 4, Arthur has never felt stronger, with Queen Guinevere and the Knights of the Round Table at his side.

Camelot basks in the halcyon days of a new golden age. But even as she flowers, so the dark seeds of her destruction are being sown, for in the frozen wastelands of the north, men are disappearing without trace.

In search of answers, King Arthur and his Knights must undertake a dangerous mission to the unknown. As the sun sets on the icy plains, Merlin finds himself locked in a battle unlike any he has fought before - a battle with fate itself.

Ancient prophecies of Mordred weigh heavy on Merlin, for not even he can sway Arthur from his chosen path.

As dawn breaks across the icy tundra, Merlin and Arthur are close to exhaustion. With each tortured step, the fortress of Ismere looms ever nearer and Merlin's fear intensifies. What game is Mordred playing? And what powerful secrets are Morgana and the druid Ruadan searching for amongst its twisted catacombs?

It seems like this time not even Merlin can stop Arthur from walking right into the lion's den. For in this bleak and transient wilderness, only one thing is certain: the great trial for Albion has finally begun.