About the book: 2006 / On the eve of Christmas, Herward discovered a mysterious ancient sword in a half-dried lake: touching its hilt filled the boy with inexplicable courage. Gerward was so bewitched by his find that he decided not to tell anyone about it. However, robbers soon broke into his house. What did they need in the home of a modest innkeeper and his family? What kind of strange people are roaming the streets of the abbey? Who set up camp in the depths of the Glastonbury forests? Are they really rebels? Herward and Gwyneth do not even suspect that the answers to these questions are closely connected with the ancient sword. But how? What secret is contained in it? Brother and sister will have to reveal this and many other secrets!