

Below

In the dark silence of the sea during World War II, the submarine USS Tiger Shark prowls on what should be a routine rescue mission. But for the shell-shocked crew, trapped together in the sub's narrow corridors and constricted spaces, this is about to become a journey into the sensory delusions, mental deceptions and runaway fears that lurk just below the surface of the ocean.
This has a lot of potential and unfortunately the film squanders it in favour of loud jump moments, many of them false, that often simply deflate any tension that was building. Apart from occasional moments, the film doesn't really make good use of the claustrophobic setting that it could have. That said, it is well made, there are a couple of creepy moments (a scene involving a mirror stands out), the underlying plot has a clever shift in perspective about 30 minutes into the film and the final act brings the threads together in a satisfying way. Well made and worth a watch, but nothing particularly stands out about it as a whole.