Emma Tries To Take Excalibur In Once Upon a Time "Siege Perilous" Sneak Peek

ABC Television Network has released a new clip from Sunday's episode of Once Upon A Time: "Siege Perilous."

Emma (Jennifer Morrison) is desperate to get her hands on Excalibur, the Mightiest of All Swords, but she soon learns from Rumpelstiltskin (Robert Carlyle) that she will need a hero to pull the magical sword from the stone. Luckily for her, she knows exactly where to find a hero worthy enough for this endeavor.

Check out the sneak peek in the video below.

In Camelot, the heroes feverishly work to free Merlin. Determined to help Emma, David embarks on a quest to retrieve a magical relic that Regina could use to communicate with the imprisoned sorcerer, but, when David leaves, ARTHUR insists on joining him because the dangers ahead are greater than he can imagine. Meanwhile, Mary Margaret discovers the fate of her old friend Lancelot. Back in Storybrooke, ARTHUR seeks David's help to catch a thief who threatens the safety of the citizens of Camelot. Across town, Emma reaches out to a conflicted Hook as she sets about her plan to draw Excalibur from the stone.

"Siege Perilous" episode of Once Upon A Time airs Sunday, October 11th at 8/7c on ABC.