The Secret of Too Many Towers

Willem and Nelle Ter Toren, eleven years old, are ordinary twins. They live in the orphanage ?The undoubtedly unhappy child?. When they learn from a mysterious old man during a stormy night that they are actually noble, they pack their bags and move to the castle of their ancestors, Domain Trop de Tours. There they hear an old prophecy, about two children who have to search for a treasure, and it soon becomes clear that they themselves could be the two children from the prophecy. Together with Fidelius, the house servant, and their two new schoolmates Flore and Wout, they take on the challenge. But they have to be quick and very careful. The enemy lurks around every corner, but the children do not know who the enemy is. The beginning of a crazy adventure?