Addiction can be used as a way to mask a deeper pain. The addict can disappear into a drug-induced haze, and find a brief reprieve before real life comes crashing back in, and there’s a need for a bigger fix. Filth follows suit, but instead of using drugs to mask pain, it uses drugs to mask a shallow story and weak jokes. Writer-director Jon S. Baird has plenty of tricks: breaking the fourth wall, throwing up graphics, frenetic cinematography, etc. He also has a great cast willing to give it their all, but nothing can compensate for a tedious picture that thinks it’s more aggressive and exciting than it actually is. Only near the very end does its constant posturing prove to have a semblance of a point.