Merlin Season 4 Episode 9 - Lancelot Du Lac

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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.

Synopsis - After Sir Lancelot makes a dramatic return from the dead, old feelings end up being reignited. Gwen findsa herself having to fight temptation before she commits an act of betrayal. Merlin becomes suspicious about Lancelot.