Margherriti directs a pedestrian giallo in a highly styli-zed way that results in a watchable film that's entirely predictable. Plus, despite the title, there's no nudity and a lot of the murders are stranglings! That's almost as bad as that slasher I watched once where someone was killed by carbon monoxide poisoning!
Following a murder at the start of the film, with the corpse getting dumped into a fancy suitcase, we find ourselves at the Gary Glitter Boarding School for Horny Teenagers, where our group of teenage girls are all into Mark Damon (and he's into them! Ah, young love), or into the new swimming teacher (that's a plot point), or avoiding the attentions of the headmistress, who is into them. Hmm.
Basically, this is about as average as you can get, plot wise, for a giallo. You've got your black gloved killer, the red herrings (especially Luciano Pigozzi as a peeping tom), the sexism, but also great colour schemes, set design, and costume design. I even managed to guess the killer and their motives, which is unusual for me as I'm a dumbass.
Despite all the odds, it's still worth a watch, because Margherriti's no fool when it comes to making film, or you could just wait and watch Seven Death's In The Cats Eye, which has a gorilla as a suspect! You heard me.