The premise is incredibly simple - a serial killer is murdering beautiful college girls, and the university is all abuzz about the killer, the circumstances, and possibly the next victim. Four pretty girls seek a temporary escape from the madness that has gripped their classmates on a vacation to a country villa where they have plenty of solitude. However, the killer has marked them out. Clearly, you know what to expect, and Sergio Martino's direction makes it edgy, straightforward and intense, the kind of classic slasher film one would expect.
The movie falls in the Italian giallo genre (a blend of crime, horror and erotica), and offers plenty of all three, and is today, considerd by giallo fans to be a masterpiece due to its blend of suspense, great visuals and exceedingly beautiful women, as well as a compelling music score by Guido and Maurizio DeAngelis. All this keeps the viewers enthralled right till the end. Voted among the top 10 giallo films of the 1970s, the movie, which begins with a simple point, soon gets straight to the point. Even fans of classic and modern horror must give it a try, because at times the movie is less suspense and more tension!