This is the third entry in a loosely linked series of films that are known by the pretty much pervy title of the Schoolgirls in Peril trilogy. All of these movies have young girls shockingly be interested in sex and being murdered for it.

The series starts with Massimo Dallamano’s What Have You Done to Solange?, one of the best films in the giallo form, which he followed with What Have They Done to Your Daughters? Sadly, Dallamano would die before this movie was made, but he is credited for writing the screenplay.

When the body of a teenage girl is discovered wrapped in plastic twelve years before Laura Palmer, Inspector Gianni DiSalvo (Fabio Testi) finds himself investigating a clique of young women called The Inseparables who attend a prestigious all-girls’ school and were friends with the victim.

One of their number is Fausta Avelli, who was also in Don’t Torture A Duckling, The Psychic and Phenomena. And Helga Line, who was in everything from So Sweet…Perverse and Nightmare Castle to The Vampires Night Orgy, Horror Rises from the Tomb and Black Candles, is in this.

Most of this movie recycles the past two films, but man, the ending where the first killer casually kills himself and then there’s the reveal of the real person behind everything? That makes watching this all worthwhile.