Veneno Para Las Hadas
For good reasons, I might say.
It reminds me of Peter Jackson´s "Heavenly Creatures" and it follows the same mechanics: Flavia befriends a girl at school, Veronica, who´s into witchcraft and convinces her she´s a witch. Veronica then convinces her to do a series of things in order from them to prepare poison for the fairies, since fairies are known to be witches´ enemies and at some point, things go really bad.
The movie in itself is not scary at all, no gory effects or anything like that. It focuses mainly on how scary Veronica can be in her evil innocence. The acting is fairly good and we really get convinced with these two girls.
The photography is pretty good and the movie looks really beautiful and I love that most of the characters we don´t get to see their faces, except for the two girls. I can´t think anything bad about it. Maybe the fact that in the end, it´s inconclusive if Veronica was really a witch or not. Though I guess is that she wasn´t. Maybe the fact that is not specified in the movie, makes it even more charming.
All in all a hidden classic that you should watch at least once in your life.
http://www.imdb.com/title/tt0135033/?ref_=fn_al_tt_1
IMDB: