Arthur and Merlin embark on a dangerous mission to capture the Cup of Life, a powerful magical artifact that carries the gift of immortality. However, before they are able to retrieve the Cup they fall prey to Jarl, an unscrupulous slave trader. They manage to escape when a trusted friend comes to their rescue but with Jarl's help, the Cup of Life ends up in Morgause's hands. Now that the dreadful sisters count on an immortal army at their disposal, will Morgause and Morgana overthrow Uther once and for all?.

Episode Viewers and Ratings

Season 3 Episode 12 of Merlin resulted in a 0.00 rating in the 18-49 demographic.

Merlin Season 3 Episodes...

• s03e01 - The Tears of Uther Pendragon (1)
• s03e02 - The Tears of Uther Pendragon (2)
• s03e03 - Goblin's Gold
• s03e04 - Gwaine
• s03e05 - The Crystal Cave
• s03e06 - The Changeling
• s03e07 - The Castle of Fyrien
• s03e08 - The Eye of the Phoenix
• s03e09 - Love in the Time of Dragons
• s03e10 - Queen of Hearts
• s03e11 - The Sorcerer's Shadow
• s03e12 - The Coming of Arthur (1)
• s03e13 - The Coming of Arthur (2)

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.