Merlin (2008) (2008)

S1E4 The Poisoned Chalice

Nimueh, determined to eliminate Merlin, deceives him into sipping from a poisoned cup, leaving him gravely ill. Meanwhile, Arthur bravely journeys into the treacherous Balor forest in search of the antidote. Unbeknownst to him, he is stepping right into a carefully laid trap.