The mystery of “Nimue” is explored in Once Upon a Time’s Nov. 8 episode in a surprising tale that sheds more light on Merlin’s backstory.
In “Nimue” we will see Merlin, back in Camelot, spearheading a mission to reunite the dagger with Excalibur so he can use the weapon to save Emma from the darkness threatening her soul.
With Zelena in tow, Hook, Mary Margaret, David, Regina and Robin steal into Arthur’s castle to take the broken sword from the maniacal king.
Meanwhile, Merlin brings Emma along on a journey to confront his ancient nemesis and retrieve the sacred spark he’ll need to reforge Excalibur.
ABC teases that both parties are tested, but one will suffer a blow that could derail the entire operation.
And in a flashback to long before the Age of Arthur, young Merlin finds purpose after he is blessed with magic and immortality, but when he falls in love with a young refugee named Nimue, everything changes for Merlin, as their romance starts a chain of events that touches every one of our present day heroes.
The “Nimue” episode of Once Upon a Time airs Sunday Nov. 8 (8:00-9:00 p.m., ET) on ABC.
We’ve got a collection of images (including a handful of behind the scenes photos) to share from the episode in our gallery below.