It Comes At Night is yet another film A24 can add to their hall of cinematic brilliance.
The film is claustrophobic, dark, lonely, and that is exactly how the world the characters are living in now is; it has been reduced to this constant state of fear. They find another family and come to the conclusion that they have better odds at surviving if they work together.
It follows a family that is safe in their boarded-up house deep within a forest. They live boring, day-by-day lives and take every possible precaution they can to avoid becoming sick themselves.
Fear is what this film is about: it shows the darkness of the night as the film's main threat. It's the time in which their greatest fears can be found lurking in shadows, in the darkness that has engulfed their fortress from those who remain as nothing but hosts to the infectious disease that longs for them.
As stated, fear follows these people. The real threat isn't just the disease; it's the human mind that lingers into the depths of the unknown. Nothing really comes at night, aside from everything they fear. There's no major jumps, no serious action sequences, just the human mind.