The cast is actually pretty good considering the budget and subject matter, with Brooke Bailey turning in the best performance as moody bassist Beatrice London. A rock band is set to play a gig at a hot underground club, an event that is to be filmed by a friend of the band for a documentary. This allows for the film to slip between traditionally shoot footage and video-camera material, which actually works quite well as the technique is used sparingly.
When the band get trapped in the club after it empties, they find themselves being picked off one by one by and unseen psychopath. You get clues as to who it is, but then you're surprised when the two people you think it is are offed in quite spectacular style. Don't get me wrong, this ain't a masterpiece, but it's an enjoyable piece of schlock cinema with a decent script, a good cast and some really graphic gore shots. It has its cringeworthy moments, but it's entertaining, and as I only paid a quid for it, I think I certainly got my money's worth.