Did you catch Merlin today on BBC? Watch the promo for next week’s episode, ‘A Servant of Two Masters’!

The official episode description reads:

When Merlin falls into Morgana’s hands, he becomes a deadly weapon in her fight for supremacy, as the magical drama continues. Using ancient magic, she pits friend against friend and creates the perfect assassin. An oblivious Arthur is in great danger. Will anyone notice Merlin’s unusual behaviour before he does the King some serious harm?

Hopefully Arthur will notice?