Gwen: It's been a year since Morgana betrayed him. Arthur: Morgause? Gaius: To the King! Emrys. The Cailleach: You are right to be afraid, Morgana. Arthur: Merlin! Agravaine: Her village was attacked. Arthur: By who? On Samhain's eve in the time of the Old Religion, the high priestesses would perform a blood sacrifice and release them. Gaius: Morgana. They're looking to Camelot for protection. If I am right, and the veil between the worlds is torn, then there's only one path open to us... To travel to the Isle of the Blessed and repair it. And if the Dorocha don't kill him on the way, our brave little lamb intends to sacrifice himself to repair the veil. They embrace. Arthur: We need to reach Daelbeth by nightfall. The Dorocha launches at them and Arthur wards it off with a torch. The knights are back at the fire pit with Merlin and Lancelot.
Plan: A: Morgana's betrayal; Q: What event has occurred one year ago? A: Samhain; Q: On what day does Morgana sacrifice Morgause? A: her approval; Q: What did Morgana sacrifice Morgause with? A: the mighty Cailleach; Q: Who does Morgana summon to tear open the veil between the worlds? A: her doom; Q: What does Cailleach tell Morgana would happen to Emrys? A: The next day; Q: When do Arthur, Merlin and the knights investigate the mysterious slaughtering of a whole village? A: Arthur; Q: Who sacrifices himself to repair the veil? A: touch; Q: How do the Dorocha kill? A: Gaius; Q: Who tells Arthur a blood sacrifice is needed to repair the veil? A: Dorocha; Q: What are the creatures that attack Arthur and Merlin called? A: Camelot; Q: Where do refugees flow to after the Dorocha attack? A: Agravaine; Q: Who is shown to be in league with Morgana? A: Gwen; Q: Who asks Lancelot to protect Arthur? A: a ruined castle; Q: Where do Arthur and Merlin stay the night on their way to the island of the Blessed? Summary: It's been one year since Morgana's betrayal. On Samhain , Morgana sacrifices Morgause, with her approval, to summon the mighty Cailleach to tear open the veil between the worlds. Cailleach informs her that Emrys would be her doom. The next day, Arthur, Merlin and the knights investigate the mysterious slaughtering of a whole village, and they're attacked by hellish creatures who kill by touch. Gaius later identifies them as Dorocha. As refugees flow to Camelot, Gaius tells Arthur a blood sacrifice is needed to repair the veil, and Arthur decides to sacrifice himself. Agravaine is shown to be in league with Morgana. Gwen asks Lancelot to protect Arthur. En route to the island of the Blessed, they stay the night at a ruined castle where they're also attacked by Dorocha. Merlin throws himself at them to save Arthur.