organ makes her escape, leaving a puzzled Ygrain believing she is going mad until Merlin explains Morgan's deception. They go to Castle Pendragon to confront her but end up as her prisoners. Leontes,now aware of his wife's infidelity,prepares to leave Camelot but joins Arthur and the knights in defending Bardon Pass,an outpost attacked by Morgan's men in Morgan's plan to show people the fragility of Arthur's protection and the need for her patronage. Guinevere also turns up and the affair is made public. The attackers are repulsed but Arthur stays behind to hold the fort,allowing the others to escape.

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