Eva Zee’s review published on Letterboxd:
quite possibly Argento's best. it's greatly to his credit that Opera feels as rigorous as Suspiria and Tenebrae feel loose, although that's not at all a knock on the latter two films. besides the superficial pleasures of having a more neatly constructed narrative structure, this rigor dovetails nicely with Opera's focus on order. nearly every shot feels deliberate and ordered, part of an efficient narrative machine which ultimately crumbles at the film's denouement, in tandem with the killer's obsessive plotting and control falling apart. absolutely fantastic.