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Continuity mistake: During the knight's feast at the round table Morgana and Merlin go off to chat and he says to her, "I've shown you too much already". We see three dogs (one lying down and two standing) bathed in a green light behind his head. Two seconds later we see this spot again and there are two dogs standing in natural light. (01:09:30)

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Continuity mistake: As Arthur thrusts Excalibur through Mordred we see a red and white standard to their left stuck in the ground that wasn't there in the previous shot. (02:12:50)

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Continuity mistake: Cornwall rides out in pursuit of Uther and is impaled as his horse throws him off. The next time we see him a few shots later as Uther makes love to Igrayne the spears protruding from his chest are not in the same spots. (00:13:25 - 00:15:00)

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Continuity mistake: In a long shot, Mordred brings Perceval to Morgana and she says as she holds him, "My lovely, clever boy". The next shot is a close-up and the blankets covering her throne are entirely different. (01:40:50)

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Continuity mistake: After the fight Lancelot lies dying and King Arthur says to Merlin, "Bring him back, whenever the cost". Guinevere lifts Lancelot's left hand and kisses it but in the next shot both of her hands are on his wound. (01:20:20)

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Continuity mistake: In the final battle as Lancelot lies dying the blood on his face, especially on his left cheek, changes in the close-ups as he speaks to King Arthur. (02:12:00)

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Continuity mistake: Morgana becomes old after she recites "The Charm of Making". They use another older actress to portray her and she's wearing the same costume and head dress but they neglected to put on the long dangling earrings that she was wearing in the previous shots when she was younger. (02:07:00)

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Continuity mistake: After speaking to Arthur, Mordred catches up to and kills Uryens by the lake with his spear. The close-up of the spear in Uryens' back shows beads dangling about one foot from the tip. In the long shot of his body we see a different spear with no beads at all, just a short dangling piece of rope. (01:48:45)

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Continuity mistake: King Arthur asks Merlin where evil is in his kingdom and he replies, "Always where you never expect it, always". In the next shot Morgana walks back to her seat at the table as Gawain blurts out, "I know where" but then two shots later we see her back at the wall where she was speaking to Merlin. (01:10:20)

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Continuity mistake: The horse that Perceval rides off on has straps tied around its hind quarters. In the next shot as he arrives at the lake the straps are gone and the color of the saddle is different. (02:14:15)

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Continuity mistake: Arthur instructs Perceval to, "Take Excalibur, find a pool of calm water, throw the sword into it". No one ever removed the spear that Mordred thrust through his chest but now as Arthur dies it's gone. (02:13:25)

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Continuity mistake: Perceval throws Excalibur into the lake and we see that it's full of blood as it flies through the air, but as the "Lady of the Lake" catches it there's no blood on it. Then as she lowers it into the water there's blood on it again. (02:16:30)

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Continuity mistake: Lancelot prays, "God, save me from myself, purge me of this love so that I can defend her" as he stares straight ahead. In the next shot he's looking up. (01:13:50)

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Continuity mistake: As King Arthur addresses the Knights of the Round Table he says, "Only the Grail can restore leaf and flower" and Perceval and the other nights are facing him. In the next shot Perceval and the knight to the left of him are facing forward with only their heads turned towards Arthur. (01:35:30)

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Continuity mistake: Mordred brings Perceval to his mother Morgana and we see the metal pendants hanging from her crown are almost motionless. In the next close-up shot of her holding Mordred the pendants are all moving. (01:40:50)

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Continuity mistake: Guinevere and Morgana walk down a staircase inside Camelot and get to the 10th step. In the next shot Guinevere notices Lancelot at the entrance and says hello and now they are on the 7th step. (01:06:30)

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Continuity mistake: After their fight Lancelot holds the spear right up to Gawain's face as he says, "I yield to your mercy, Lancelot". In the next shot the spear is up in the air well above his body. (01:19:55)

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Continuity mistake: After killing Uryens, Mordred rides up on his horse and looks over in the direction of Perceval, who's hiding behind a tree. At first his right arm is bent close to his chest, then in the next shot his arm is at his side. (01:48:50)

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Continuity mistake: When Arthur thrusts Excalibur through Mordred there's a dead white horse behind them. When we first see it, the head is facing away from them but later as Mordred falls dead the horse is reversed with the head closer to them. (02:13:00)

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Continuity mistake: After the final battle Mordred thrusts a spear through his father Arthur's chest. It goes totally through him but if only the very tip has blood on it. Later on in the scene it's entirely bloody. (02:12:40)

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