To the Great Deep: 6 (Merlin Mystery)

When Sir Agravain leads a dozen knights to arrest Lancelot in the queens chamber he kills them all in his own defense-all except the villainous Mordred who pushes the king to make war on the escaped Lancelot and to burn the queen for treason. On the morning of the queens execution Lancelot leads an army of his supporters to scatter King Arthurs knights and rescue Guinevere from the flames leaving several of Arthurs knights dead in their wake including Sir Gawains favorite brother Gareth. Gawain chief of what is left of the Round Table knights insists that the king besiege Lancelot and Guinevere at the castle of Joyous Gard goading Lancelot to come and fight him in single combat.However Merlin examining the bodies on the battlefield realizes that Gareth and three other knights were killed not by Lancelots mounted army but by someone on the ground who attacked them from behind during the melee. Once again it is up to Merlin and Gildas to find the real killer of Sir Gareth before Arthurs reign is brought down completely by the warring knights and by the machinations of Mordred who has been left behind to rule in the kings stead.