This is an extremely exhilarating, nail-biting ride. To such an extent that I actually started to tire of the sense of hopelessness and constant torture of its characters and the audience watching, which is a shame, because had it been 20 minutes shorter it would have been a masterpiece. Still an excellent exercise in suspense, with a wonderfully wacky subplot involving incompetent cops and a poo-smeared mayor thrown in for good measure.