I wouldn't say that Frontière(s) is a masterpiece but it is for certain one of the better French horror movies. A young gang of wanna-be gangsters meet their fate in the hands of a crazy Neo-Nazi-family - belongs to the line of movies like Wrong Turn, House of Wax, Hostel, The Hills Have Eyes etc. So what you get are some grotesque, violent and gory moments. Production and acting is decent - a solid watch.