Assassin

Sent out one morning by his mother to hunt for food, Dav is the only literate member of his small clan, excellent with a game bow, but sadly lacking with axe, sword and pike. He returns laden from his hunt to find his village burning and his family and kin being slaughtered by a group of mounted soldiers led by a witch. Determined to avenge his family, Dav meets a strange creature in the forest and is changed into the fearful, near-invisible thrate, a deadly assassin. What is it the witch seeks and how will Dav and Cil defeat her?