Merlin

8:10pm Saturday 17 December on BBC ONE

With Morgana at the head of a vast Southron army, a deadly net is closing in around Camelot, as the drama continues.

When the sorceress strikes, the ferocity of her attack forces everyone to run for their lives – even Arthur. But Morgana won’t let him escape that easily. And so begins a chilling hunt.

Can Merlin save the King from Morgana’s clutches? Or has Arthur’s luck finally run out?

Colin Morgan plays Merlin with Bradley James as Arthur, Katie McGrath as Morgana, Nathaniel Parker as Agravaine, Richard Wilson as Gaius, Angel Coulby as Gwen, Tom Hopper as Sir Percival, Eoin Macken as Sir Gwaine, Adetomiwa Edun as Sir Elyan and Rupert Young as Sir Leon.

The guest cast for this episode are Terence Maynard, who plays Helios, Ben Daniels, who plays Tristan and Miranda Raison, who plays Isolde.

Ep 12/13

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