This is not a great movie. It's never going to garner much of 'The Academy's' time and is an absolutely derivative example of the genre, to the point where a seasoned viewer would be able to identify each prison film that is being mined on a scene by scene basis.
That said, it's not terrible either. It's technically competent with regards to sound, lighting and cinematography and the sets and extras make for an immersive and atmospheric environment. Some of the dialogue is a bit leaden, and it's delivery equally so in parts, but this is definitely 5/10 material.
I'm not sure that those reviewers giving 1/10 scores have ever actually seen a truly bad film. This is not one of those.
