|First Aired:||3 November 2012|
|Written by:||Richard McBrien|
|Directed by:||Ashley Way|
|Guest Stars:||Rupert Young (Recurring), Eoin Macken (Recurring), Adetomiwa Edun (Recurring), Tom Hopper (Recurring), Alexander Vlahos (Recurring), Frances Tomelty, Sian Thomas, Helen Schlesinger and Andrew Tiernan|
|Filming locations:||Clearwell Caves, Puzzlewood, Brecon Beacons and Fforest Fawr|
In the inky depths of an ancient pool, a trio of soothsayers cast a dark judgement upon Arthur. But despite Merlin’s warnings, the headstrong king refuses to take their words seriously, so their fury rains down on Camelot. With the kingdom in jeopardy, only the greatest sacrifice can appease them – but is it one Arthur is prepared to make?