Naked You Die (1968)

A psychopathic killer roams the halls of an elite female boarding school in the giallo classic Nude... si muore (1968). The killer’s primary target is wealthy heiress Lucille (Eleonora Brown), a naughty student who mounts the riding instructor (Mark Damon) during her extracurricular hours. Before going for the hit on Lucille, the murderer warms up by dispensing of a number of other students, including nubile schoolgirl Malisa Longo. In a tantalizing build-up scene, the unsuspecting victim showers unaware, offering a lasting peek at the pert body the killer finds so irresistible.