Lips of Blood
Lèvres de sang (original)
Starring Jean-Loup Philippe, Annie Belle, Natalie Perrey, Catherine Castel, Marie-Pierre Castel, Hélène Maguin, Anita Berglund, Claudine Beccarie, Béatrice Harnois, Sylvia Bourdon
It's a mystery and horror movie, and has a rating of 5.9 out of 10 from Imdb which is fairly okay for this kind of movie.
Watch it here
Not found streaming from Switzerland.