Prosecutor King Přemysl II. Otakar Oldřich of Chlum and at the same time the administrator of the Bezděz Castle also has the competence of the investigation and punishment of throat crimes in the region. This time he solves the theft of the thorn from Christ's crown; The rare relics that Havel has already acquired from Lemberk and intends to devote it to the Church of Sts. Vitus in Prague. The crime was carried out just two days before the arrival of the king, which is to participate in the ceremonial consecration of the relic, so the whole case threatens a nice shame. In a short time, other crimes - the murders of Zeman Jan of Střeč, the Lemberk chaplain and the goldsmith Ruprecht of Jablonné are piling up. Are these crimes related or not? And what about the alleged rape of the goldsmith's woman? Are the Danish envoy and a French nobleman involved in crimes? Who and why kill cat pets Zdislava of Lemberk? Oldřich of Chlum is pushing time to quickly solve all the crimes, but traditionally he is really doing great.