'Filth': Exclusive Clip Of Irvine Welsh's 'Unfilmable' Gritty Novel Brought To Screen, Starring James McAvoy

Irvine Welsh's gritty bestseller 'Filth' was deemed unfilmable, but it's on its way to the big screen, and HuffPostUK has an exclusive clip - WATCH BELOW. Starring James McAvoy, Jamie Bell, Imogen Poots, Jim Broadbent and Eddie Marsan, the story is of a policeman - just a bigoted, bipolar and druggy one - hallucinating his way through the festive season of Edinburgh. 'Filth' is in Scottish cinemas from 27 September and UK cinemas from 4 October.