Bird Box is a movie based on a novel with an interesting and curious concept to carry out, taking the main idea of fear of something incomprehensible, but above all, imperceivable, thanks to the fact that they are unable to see their enemy, this monster or creature, this strange entity that has the ability to kill them with just a second inside the eye orbits of these people. A creature that is impossible to see, the fear of something that we cannot even defend ourselves.

With an interesting idea the movie starts, developing at a slow pace, but solid, with good performances by the cast, especially Bullock, which gives an interesting perspective to the tough girl but able to open her heart to those who deserve it, both their care and love.

The film is directed in a good way, with quite interesting and entertaining moments, although a narrative structure based mainly on flashbacks and memories that end up becoming a bit of overexposure, however, it gives a good idea about the main plot and the first days of the disaster. After this, the final act concentrates mainly on the present and takes us through the most tense moments of the film. Although it remains stable with all these aspects, I think it fails a lot in the logical aspect or at least the logical narrative, also becoming a little slow with the development of the 2nd act of the story, and I must say, that the movie really,is not scary, it can be tense and somewhat exciting, but I never had a sensation of terror while watching it.

Still, it was very entertaining and worthwhile for horror movie lovers.