The most impressive part of this horror movie is how much it relies on sound. The alien has very little screen time. The environment Shyamalan creates, and the way the screenplay builds tension around it, is what really carries the horror. The scene where everyone looks at the half-filled glasses when they realize the aliens are afraid of water is powerful. And the line Bo says stuck with me: “There’s a monster outside my room. Can I have a glass of water?” It gave me a perspective, that the water we reach for during anxiety or a nightmare is what calms it, almost like it kills the fear. I don’t know if I made complete sense, or if I failed to explain it properly. But it was something. Striking.