Most Creative Plot Device: A Nail In The Stairs

Rating: 3/10 (9 July 2019)

After about 400+ days of being near-confined in that basement, not once did they see that large nail sticking up? I'm sorry; but how many times did they go up and down the stairs and not see that thing sticking out? Just imagine for a second if that nail wasn't there, that little metal spike was the harbinger of the chaos that ensued in the last 45 minutes.
There's other problems I have, but those are things that other people have already said hundreds of times, such as: The waterfall, putting a 4 year old monkey-brained child behind them, bringing a child into a world like this, and the government's top scientists couldn't figure out that these creatures are ultra-sensitive to high-pitched sounds yet an average family living under a farm with below-average technology figured it out.
Movie was overall entertaining, but it's really hard to suspend my disbelief at this contrived and lazy writing at times.