Professor De Vitis, a retired physician and president of a prestigious golf clubs in Rome, is found dead on his own golf course. The investigations are more complicated than expected for Inspector Fabbri and Rex, as almost all members of the club have a motive for the murder.

At a female neighbour's party, Inspector Lorenzo Fabbri meets young student Ivana who comes to see him in the police department the following day. The law student from former Yugoslavia asks him to reopen the case of her mother Miliça who lost her life 17 years before. She does not believe in the suicide theory of the investigators at the time.