When out on a hunt, Arthur encounters a huge monstrous creature never before seen. Gaius realises it is a Questing Beast, a creature conjured from the nightmares of a long-dead king, whose bite is always fatal. When Arthur faces the creature again, it is vanquished... but Arthur is bitten and his life hangs in the balance. Merlin is told by the Great Dragon to seek the Isle of the Blessed, where members of the old religion have the power to save the future king. However, there is a price to pay. In order for a life to be saved, a life must be taken...
Season 1 Episode 13 of Merlin resulted in a 0.00 rating in the 18-49 demographic.
Merlin is a young warlock who arrives in the kingdom of Camelot after his mother arranges for him to stay with the court physician, Gaius. He discovers that the king, Uther Pendragon, has outlawed magic and imprisoned the last great dragon deep under the kingdom.
The dragon tells Merlin that he plays an important role: to protect Uther's son, Arthur, who will bring forth a great kingdom. When Merlin meets Arthur, he believes that he is arrogant and Arthur, likewise, views Merlin as subservient. Merlin must keep his magic secret or face being executed by Uther.