
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...


Writer: Julian Jones (II)
- Stars:
- Bradley James (II) (Prince Arthur)
- Colin Morgan (Merlin)
- Richard Wilson (Gaius)
- Anthony Stewart Head (King Uther Pendragon)
- Angel Coulby (Gwen (Guinevere)
- Katie McGrath (Morgana)
- Recurring Role:
- John Hurt (Voice of the Great Dragon)
- Michelle Ryan (Nimueh)
- Guest Star: Caroline Faber (Hunith)