Nimue and Mordred had a head start, but they wouldn't be able to maintain their lead very long. Arthur was a trained knight, and Nimue looked drained.
Arthur turned his head to look at Merlin, slowing down but not coming to a complete halt. "It was magic, Merlin! Who knows what they're trying to do! We have to stop them!"
Nimue and Mordred took a sharp turn and ducked behind some bushes. There was a flash of light.