Jáchymov demons

The young knight George Adam of Dobronín becomes scribe of the Royal Chamber and his task is to keep order in the Valley of St.Jáchym, where silver has been found. Miners from the other side of the mountains are moving to the new settlement and with them come people looking for a living, some of them not always honest. Shortly after the arrival of the young George Adam, the murder of the shenker Margold occurs. It seems a trivial crime, but witnesses speak of two demons. It turns out that a similar murder happened two days ago, when the master butcher died. And to make matters worse, another murder occurs later.