Opera

When the diva of a daring production of Verdi's Macbeth directed by Marco has an accident, the young opera singer Betty successfully replaces her. Soon a psychopath obsessed by Betty kills her boyfriend, the production assistant Stefano; her costumer designer Giulia; and her agent Mira. Inspector Alan Santini, who is her fan, gives protection to Betty, but the murderer always gets close to her. Who might be the killer?