And so Sir Launcelot rode on the one side and she on the other: he had not ridden but a while, but the knight bade Sir Launcelot turn him and look behind him, and said, Sir, yonder come men of arms after us riding. And so Sir Launcelot turned him and thought no treason, and therewith was the knight and the lady on one side, and suddenly he swapped off his lady’s head.