The case of the priest from Bojná

The main heroes and Great Moravian "detectives" are Slavomir, a prince from the Mojmir family (a real character) and his Viking friend Erik. - In the spring of 871, a messenger from Bojna, a powerful system of fortresses in the Principality of Nitra, comes to Slavomir with an invitation to attend a funeral mass for Kosora, the murdered lord of Bojna. Kosor's son, however, asks Slavomir first of all to find his father's murderers and then to unite in the fight against the Franks occupying the Moravian Kingdom. Slavomir accepts the invitation and arrives at Bojna, where, in the meantime, the murders increase and Slavomir himself finds his life in danger.