Victor Carroon’s review published on Letterboxd:
Peak giallo: Literally everybody in the movie is implicated as a suspect about halfway through. Why narrow your options?
Non-peak giallo: The backwater setting, languid pace, Gothic plotting, near-complete lack of nudity, and no animal abuse — unless you count those snails in the refrigerator, most of which are plainly dead.
Semi-peak giallo: OK then, those dead snails.