This movie was a little long at 2 hours, but held my attention throughout. Sandra Bullock was great as usual, and played her role convincingly. Bird Box was suspenseful. The monsters or malevolent beings remained a mystery, which was a bummer. I would have liked to have them neatly explained, I guess. The end gripped me and was a surprise twist. The actress who played Girl was adorable & so well suited for the part. All in all, this was an exciting movie that had me looking over my back a lot. And to survive the movie, you'd have to be ok with blood & gore, a little excessive in some parts.