Completely ridiculous. NOT credible from the get go. Only suited for the braindead.

Rating: 3/10 (6 February 2020)

I do like a hysteric story about people going crazy, but it must have SOME ring of truth to it. This story has NONE. It's really completely ridiculous.
Director Susan Bier is known for great European drama movies. Really great. But she now, for unknown reasons, suddenly decided to go and direct an American action horror movie. European drama director and American horror movies are a bad mix, resulting in an irritating dud.
Any good? Well the actors are great. But they have to act in a silly story, which they cant save from drowning. Some of the action is ok. The feeling of panic is ok-ish, werent it for the ridiculous story and the TOTAL lack of any credibility. So basically there is nothing good about it, unless you are braindead.
3 stars, for the actors and some action stunts. If you have to watch it, try being drunk, perhaps you can laugh your head off...