When you find you are 15 minutes in and wanting to check your phone you realise that this hasn't grabbed you - and it will continue like that for a long time.

The two actors go through a range of emotions with little credibility but it all feels false and the storyline is a pretentious take on a familiar scenario.

Nothing grabs. Nothing really interesting happens. And it is all made annoying by a soundtrack of cacophony which prevents any real tension building up in what should feel like a claustrophobic environment.