Detektivka [Detective Story]

There are a lot of murders going on in the city. Most victims have one thing in common. They are the owners or bosses of the biggest businesses in the area. Detectives Franta and Jarda have been working on this case for three years, but the murders keep increasing. Not long ago, when the last businessman in this town died, the detectives also disappeared. Is the mafia involved? Did the detectives find something that would destroy the local mafia? Was it revenge? Find the detectives and send the killer to jail!