S1, E3: Arthur takes Gundleus prisoner. Nimue struggles with the trauma of her rape and plans to kill Gundleus. Arthur learns that Gundleus’ uncle Gorfydd is preparing for war. Nimue tries to pull Derfel into her plans, but Derfel can’t betray Arthur. Nimue is furious and decides to leave Caer Cadarn. Arthur releases Gundleus on the condition that he brings Gorfydd to Mordred’s naming ceremony.