5x03 Emma Hook, 1

DAVID AND ARTHUR EMBARK ON A HEROIC QUEST WHILE EMMA ENACTS HER PLAN TO DRAW EXCALIBUR, ON ABC S ONCE UPON A TIME Sinqua Walls Guest Stars as Lancelot, Joana Metrass Guest Stars as Guinevere and Liam Garrigan Guest Stars as King Arthur Siege Perilous 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