Johannes Roberts directs Claire Holt, Mandy Moore and Matthew Modine in this survival thriller where two tourists find themselves trapped on the ocean floor in a rusty shark cage, their oxygen running out and the predators circling.

So I watched this mainly for Claire Holt who impressed in the TV show Aquarius. She doesn’t get much chance to shine here, being stuck behind scuba gear for the bulk of the running time and behind Mandy Moore’s character in the writers’ affection. It struggles to fill its short running time, delivering almost precisely what you’d expect from seeing the trailer with little deviation. Claustrophobic thrillers like this are hard to pull off and this is adequately inventive in keeping things ticking along and busy… The Shallows did it better, with a stronger lead and that still wasn’t exactly brilliant. Passable.

5