The basic virtue - it is an authentical psychological horror. The second - it explores the religious aspects in fair manner. It gives , in precise way, the portrait of the pure cruelty of childhood. Not the last, it is just well crafted , fresco of isolation, mute conflicts, revenges, powerful connections with the past and the round architecture of the story. One of the good points - the reference to The Others by Alejandro Amenabar. So, many virtues defining this film .