The witch changed herself into a horse to get to the river in time to use its water to make a shield for herself and Kernow’s men. Kernow had been puzzled that the horse the witch had changed into was a colt, not a filly or mare. So that meant Adhan was the one under the iris-covered grave mound. Her son had dressed in her clothes and used her name. He had presented himself as dead. The boy. The little god of the marshlands.