5x04 Emma Hook, 1

WHEN SHE LEARNS KING ARTHUR MAY BE HIDING HIS TRUE INTENTIONS, MARY MARGARET MUST CONVINCE DAVID AND THE HEROES OF HER SUSPICION BEFORE THEY JEOPARDIZE EMMA S SAFETY, 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 The Broken Kingdom After receiving a cryptic warning from Lancelot about Arthur s intentions, Mary Margaret realizes Arthur may be the heroes biggest threat, but when she is unable to conv