I remember being disappointed after watching "The Happening" - mainly because it felt as though all of the action and mystery peaked in the first third of the movie. Bird Box kept me interested throughout and I was not disappointed.

It felt to me like a mix of elements from The Happening, A Quiet Place and the claustrophobic group dynamics of The Walking Dead. All told from the perspective of Sandra Bullock's character.

Some of the mystery of what is happening stays with you after the movie. This is no bad thing. It is something to discuss and debate. "What did you think was happening?"