Mysterious. Fear of the unknown in a vast majority of the movie. The fear of light and whatever is out there keeps you wondering throughout the movie if whatever it is, is ever going to come out and kill your craving and desire to see what they are so afraid of. Will it ever attack? You sit at the end of your seat and you so want to take those blindfolds off of the children and free them of this awful life where play doesn't exist. No, not like any other movie I've seen before.