Noc klavíristy (1977)

The problematic protagonist is the head designer of a housing association who wants to make a profit at any cost. His unwitting opponent is a bar pianist who accidentally witnesses the murder of a young man and sets out to investigate on his own. An old-world and somewhat comical figure, he poignantly interferes with the cops' work, only to find that he is the one who is credited with catching the perpetrator...