The movie is about a man who moves into an apartment building in New York to live and work as superintent. It´s all you need to know to enjoy the movie without spoilers. Many people trying to make a sinópsis, finally make a resume of the movie and is not good for some viewers like me. I´ll always prefer to discover the movie when I´m watching, including the plot.
When somebody says: "X movie is about a girl who loose his boyfriend and bla, bla, bla.", it´s ruining 15/20 minutes of the movie.
Anyway, the movie is an 8 for me, for many reasons, but I think that specially coz I saw the movie without expectations and I was really surprised.
The movie could have been better, much better, but still being a good movie.
I definitely recommend it for everyone who enjoy a good thriller.