Torso (1973)

Original title: I corpi presentano tracce di violenza carnale

Enter... if you dare the bizarre world of the psychosexual mind.

A masked serial killer with psychosexual issues strangles female coeds with scarves before dismembering them. When a wealthy student identifies one of the scarves and thinks she has a lead on a suspect, she becomes the killer's next target, retreating to her family's remote cliffside villa with three of her girlfriends.