High in the mountains, a great horde gathers; Morgana prepares for war with a vengeful Mordred at her side.

Merlin feels the weight of his destiny like never before as the ancient prophecies play out with terrifying accuracy. But before he can save his beloved Camelot, he must save himself. For it is not just the kingdom Morgana wishes to destroy - it is also Emrys.

Episode Viewers and Ratings

Season 5 Episode 12 of Merlin resulted in a 0.00 rating in the 18-49 demographic.

Merlin Season 5 Episodes...

• s05e01 - Arthur's Bane: Part One
• s05e02 - Arthur's Bane: Part Two
• s05e03 - The Death Song of Uther Pendragon
• s05e04 - Another's Sorrow
• s05e05 - The Disir
• s05e06 - The Dark Tower
• s05e07 - A Lesson in Vengeance
• s05e08 - The Hollow Queen
• s05e09 - With All My Heart
• s05e10 - The Kindness of Strangers
• s05e11 - The Drawing of the Dark
• s05e12 - The Diamond of the Day: Part One
• s05e13 - The Diamond of the Day: Part Two

Merlin Show Summary

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.