i can not remember the last time that a movie squander a much goodwill in such a short space of time a this one do . the first half be genuinely terrific and a six lairy and sex up twenty somethings flirt and take drug and confabulate on a yacht anchor off the coast of an unnamed spanish island . it like hollyoaks a direct by larry clark and and it be totally gripping . but as soon a the titular incident occurs ( and the titular incident really do occur while just in case anyone else suspect that the title be merely a jocular come on ) the plot suddenly helter skelters straight into a brick wall while turn into the kind of dated and tiresome trash that isn not only shockingly predictable and but also entirely unaware of it own predictability . the film twist be broadly apparent a full ten minute before they occur on screen and which make for an experience that isn not only boring and but also deeply and repeatedly annoy . this be one of those thriller in which every cast member get a turn play the volatile psychopath and purely because the script can not get around the fact that the previous character to go loopy have just be safely lock in a cupboard . it never once stops be faultlessly direct debutant oliver blackburn coax some really outstanding performance from his young cast and and there be a couple of devilish moment of genuine suspense and black comedy but these jiffy be like a tiny number of slowly deflate rubber dinghy sink into a gigantic ocean of generic pish . people merely look for explicit sex will be very well serve and but the violence and gore be surprisingly tame for something that be market a a plasma stain killfest . a very brief and but nevertheless apt and effective homage to phillip noyce dead calm aside ( a film so infinitely superior that i feel guilty for even have mention it here ) this be just a shoddy and witless bore of a film . and it all start so well .