Young knight Jiří Adam of Dobronín will become the scribe of the Royal Chamber and his task is to oversee the order in the valley of St. Jáchym, where the silver was found. The new settlements are withdrawn miners from the other side of the mountains, and with them people who are looking for livelihoods, but some do not always honest. Shortly after the arrival of young Jiří Adam, Šenkýř Margolda will be murdered. It seems to be a banal crime, but witnesses speak of two demons. It turns out that a similar murder happened two days ago when a butcher master died. And to make matters worse, there will be another murder later.